CN206272061U - Laser optical system - Google Patents

Abstract

The utility model provides a laser optical path system. The laser optical path system includes a laser optical path debugging device and a detection system; Q module, second resonant diaphragm frame, first optical path beam splitter, split shutter, second optical path beam splitter and laser frequency multiplier; detection system includes: charge-coupled device CCD camera, power meter and computer display screen; detection The system is used to collect laser spots and display the collected laser spots in the detection system in real time. The laser optical path debugging equipment is used to realize functions such as laser frequency doubling and Q switching. The laser light path system provided by the utility model has the advantages of simple operation and convenient maintenance, and can improve the laser display effect.

Description

Laser optical system

technical field

The utility model belongs to the field of optics, in particular to a laser light path system.

Background technique

At present, the laser application should be very extensive, and the laser optical system needs to debug the reference optical path, the resonant cavity and the laser frequency doubling system. However, the current laser optical system does not have a Q-switching module, the existing laser optical path debugging system is incomplete, the research is not targeted, and the operation is complicated, resulting in poor research results.

Utility model content

In view of this, it is necessary to provide a laser optical path system for the problems that the above-mentioned laser optical path system is not targeted, the operation is complicated, and the research effect is not good.

The embodiment of the utility model provides a laser optical path system, including: laser optical path debugging equipment and a detection system;

The laser optical path debugging equipment includes: an optical base, an optical indicator, a first resonant diaphragm frame, an optical resonant cavity, a Q-switching module, a second resonant diaphragm frame, a first optical path beam splitter, a light splitting shutter, The second optical path beam splitter and laser frequency doubler;

The light indicator, the first resonant diaphragm frame, the optical resonant cavity, the second resonant diaphragm frame, the first optical path beam splitter, the split shutter, the second Both the optical beam splitter and the laser frequency multiplier are assembled in the optical base;

The optical indicator, the first resonant diaphragm frame, the optical resonant cavity, the Q-switching module, the second resonant diaphragm frame and the first optical path beam splitter are optically connected in sequence;

The split light gate is optically connected to the laser frequency multiplier in turn; the split light gate is optically connected to the first light path beam splitter and the second light path beam splitter respectively;

The detection system includes: a charge-coupled device CCD camera, a power meter and a computer display screen; the charge-coupled device CCD camera and the power meter are all assembled in the optical base; the charge-coupled device CCD camera and the The laser frequency multiplier is connected, and the computer display screen is respectively connected with the charge-coupled device CCD camera and the power meter.

Further, the first resonant diaphragm frame is a full anti-resonant diaphragm frame; the second resonant diaphragm frame is a semi-anti-resonant diaphragm frame.

Further, the optical resonant cavity is composed of two opposite parallel plane mirrors or curved mirrors perpendicular to the optical axis.

Further, the split shutter is an electric split shutter.

Further, the first optical path beam splitter is a 45° refracting mirror; the second optical path beam splitting mirror is a 45° refracting mirror.

Further, the light indicator is a red light indicator.

The laser optical path system provided by the embodiment of the utility model includes laser optical path debugging equipment and a detection system, and the laser optical path debugging equipment is connected to the detection system. The laser optical path debugging equipment can form an independent optical debugging module, and has laser reference debugging, resonant cavity Debugging, Q-switching module and laser frequency doubling system debugging and other training functions, the detection system collects the laser spots in the laser light path debugging equipment and displays the collected laser spots in real time, so that the laser light path system has a more comprehensive laser light path Debug the system, the research is targeted, the operation is simple, the maintenance is convenient, the laser display effect is improved, and the research effect is further improved.

Description of drawings

Fig. 1 is the structural schematic diagram of the laser light path system that the utility model embodiment provides;

Fig. 2 is the schematic structural diagram of the light splitting of the first optical path spectroscopic mirror provided by the embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a detection system provided by an embodiment of the present invention.

Explanation of reference signs:

1-light base; 2-light indicator; 3-first resonant diaphragm frame;

4-Optical resonant cavity; 5-Q-switching module; 6-Second resonant diaphragm frame;

7-first light path beam splitter; 8-splitting light gate; 9-second light path beam splitter;

10-laser frequency multiplier; 11-CCD camera; 12-power meter;

13-Computer display screen.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Fig. 1 is a schematic structural diagram of a laser optical path system provided by an embodiment of the present invention. As shown in Figure 1, the laser optical path system includes: laser optical path debugging equipment and a detection system.

Laser optical path debugging equipment includes: optical base 1, optical indicator 2, first resonant diaphragm frame 3, optical resonant cavity 4, Q-switching module 5, second resonant diaphragm frame 6, first optical path beam splitter 7 , Splitting shutter 8, second optical path beam splitting mirror 9, laser frequency multiplier 10. The detection system includes: a charge-coupled device camera 11 , a power meter 12 and a computer display screen 13 .

Optical indicator 2, first resonant diaphragm frame 3, optical resonant cavity 4, Q-switching module 5, second resonant diaphragm frame 6, first optical path beam splitter 7, split shutter 8, second optical path beam splitter 9 and a laser frequency multiplier 10 , a charge-coupled device (Charge-Coupled Device, CCD for short) camera 11 and a power meter 12 are all assembled in the optical base 1 .

In the embodiment of the utility model, the optical base 1 is used to assemble the optical path mechanism of the optical device, the optical indicator 2, the first resonant diaphragm frame 3, the optical resonant cavity 4, the Q-switching module 5, and the second resonant diaphragm mirror Frame 6, optical beam splitter 7, splitting shutter 8, laser frequency multiplier 10, CCD camera 11 and power meter 12 can be detachably assembled in optical base 1. That is, each optical device in the laser optical path debugging device can be assembled on the optical base 1 when in use, and can be disassembled from the optical base 1 when not in use.

The optical indicator 2 , the first resonant diaphragm frame 3 , the optical resonant cavity 4 , the Q-switching module 5 , the second resonant diaphragm frame 6 and the first optical path beam splitter 7 are optically connected in sequence. The split light gate 8 is optically connected to the laser frequency multiplier 10 in turn; the split light switch 8 is optically connected to the first light path beam splitter 7 and the second light path beam splitter 9 respectively. The CCD camera 11 is connected with the laser frequency multiplier 10, and the computer display screen 13 is connected with the CCD camera 11 and the power meter 12 respectively.

In the embodiment of the present utility model, the light indicator 2 is used for benchmark light positioning and debugging. The optical resonant cavity 4, the first resonant diaphragm mirror frame 3 and the second resonant diaphragm mirror frame 6 are all important components of the laser, and the optical resonant cavity 4, the first resonant diaphragm mirror frame 3 and the second resonant diaphragm mirror The combination of the three frames 6 performs optical resonance, so that the laser produces laser light. The optical resonant cavity 4 is used for light energy feedback to generate laser oscillation; the first resonant diaphragm frame 3 and the second resonant diaphragm frame 6 are two-dimensional adjustment frame for laser debugging, so that the optical resonant cavity 4 Laser oscillations are generated. Specifically, a part of the light in the optical resonant cavity 4 is reflected back by the first resonant diaphragm frame 3 to resonate in the optical resonant cavity 4, and another part of the light passes through the second resonant diaphragm frame 6 to become the output laser of the laser; Reflecting back and forth in the resonant cavity 4 provides light energy feedback to generate laser oscillation. The Q-switching module 5 can compress the output pulse width of the laser and increase the peak power of the pulse, and is a special key component—fast intracavity optical switch.

The first optical path beam splitter 7 and the second optical path beam splitter 9 are used for optical splitting and guiding, and a beam of laser light output from the second resonant diaphragm mirror frame 5 is divided into multiple beams of laser light, that is, a beam of laser light output by the laser split into multiple laser beams. The splitting shutter 8 is used to control the guiding selection of the multi-beam lasers output by the first optical path beam splitter 7 and the second optical path beam splitter 9, and guide each laser beam output by the first optical path beam splitter 7 and the second optical path beam splitter 9 into the The laser frequency doubler 10 is coaxial with the optical path passing through the laser frequency doubler 10 . The laser frequency multiplier 8 is used for frequency multiplication to adjust the laser light path, and the frequency of each beam of laser light entering the laser frequency multiplier 10 is carried out frequency multiplication amplification debugging; wherein, the laser frequency multiplier 10 can send the laser with a wavelength of 1064 nanometers ( nm) is converted to 532nm; the laser frequency multiplier 10 is a device using laser frequency doubling technology, and can also be called a laser frequency doubling system. The principle of the laser frequency doubling technology used in it is the same as that of the prior art. The CCD camera 11 is connected with the laser frequency doubler 10 and is used for collecting images of the laser spot in the laser frequency doubler 10 . The power meter 12 is used to collect laser energy parameters. The computer display screen 13 is connected with the CCD camera 11 and the power meter 12 respectively, and the display screen in the computer display screen displays the image of the laser spot collected by the CCD camera 11 and the laser energy parameters collected by the power meter 12 . The embodiments of the present utility model are not limited and described in detail here.

The specific debugging process and principle of the laser optical path debugging equipment in the embodiment of the utility model are: connect the laser optical path debugging equipment to the power supply and cooling system, turn on the power supply and cooling system, and assemble all optical devices on the optical base 1 . Turn on the light pointer 2, adjust the light pointer 2, adjust the reference light output by the light pointer 2 to the main axis of the optical path, and then fix the light pointer 2 to realize laser reference debugging. Wherein, the optical path is the path of light propagation; the main axis of the optical path is the axis of the optical paths of the optical resonant cavity 4 , the first resonant diaphragm frame 3 and the second resonant diaphragm frame 6 . Adjust the optical resonant cavity 4 , the first resonant diaphragm frame 3 and the second resonant diaphragm frame 6 to ensure that the reference light passes through its center and is coaxial with the optical path. Turn on the laser power, fine-tune the first resonant diaphragm frame 3 and the second resonant diaphragm frame 6, and adjust the laser spot to the roundest and most concentrated energy. Debug the first optical path beam splitter 7, the time-sharing shutter 8, the second optical path beam splitter 9 and the laser frequency multiplier 10, and each beam of laser output from the first optical path beam splitter 7 and the second optical path beam splitter 9 enters the laser doubler The frequency converter 10 is coaxial with the optical path of the laser frequency doubler 10, and the changes of the laser light passing through the frequency doubler are observed. After the optical path debugging is completed, check the optical path debugging status. In the embodiment of the utility model, by adjusting the light indicator 2, the collimation reference light source can be debugged, and the laser oscillation path can be better determined; Frame 6, you can debug a clearer laser spot and produce a better oscillating laser. By debugging the first optical path beam splitter 7, the time-division shutter 8, the second optical path beam splitter 9 and the laser frequency multiplier 10, it is ensured that each laser beam output by the first optical path beam splitter 7 and the second optical path beam splitter 9 enters the laser The frequency doubler 10 is also coaxial with the optical path of the laser frequency doubler 8, which is convenient for observing laser changes.

In a further embodiment, the first resonant diaphragm frame 3 is a full anti-resonant diaphragm frame; the second resonant diaphragm frame 6 is a semi-anti-resonant diaphragm frame. Specifically, in the embodiment of the utility model, the first resonant diaphragm frame 3 is a total anti-resonant diaphragm frame, and a total anti-resonant diaphragm with light transmittance T=0% is assembled as a total anti-resonance system for laser debugging. The second resonant diaphragm frame 6 is a semi-anti-resonant diaphragm frame, which is equipped with a semi-anti-resonant diaphragm with light transmittance T=15% as a total reflection system for laser debugging. The embodiment of the utility model is respectively provided with the full anti-resonant diaphragm mirror frame of light transmittance T=0% and the semi-anti-resonant diaphragm mirror frame of light transmittance T=15% at the two ends of optical resonant cavity 4, can compare A good part of the light in the optical resonant cavity 4 is reflected back to the optical resonant cavity 4 by the first resonant diaphragm frame 3 to resonate, and the other part of the light passes through the second resonant diaphragm frame 5 to become the output laser of the laser, realizing optical resonance .

In a further embodiment, the optical resonant cavity 4 is composed of two opposite parallel plane mirrors or curved mirrors perpendicular to the optical axis. Specifically, in the embodiment of the utility model, the optical resonant cavity 4 is composed of two opposite parallel plane mirrors or curved mirrors perpendicular to the optical axis, which play the role of a highly selective feedback device, and couple and feed back the signal, and the phase is kept constant. change, resulting in laser oscillation. Wherein, the optical axis is the centerline of the laser beam.

In a further embodiment, the divided shutter 8 is an electric divided shutter 8 . Concretely, in the embodiment of the utility model, the split light switch 8 adopts the electric split light switch 8, which can automatically control the guiding selection of the multi-beam lasers output by the first light path beam splitter 7 and the second light path beam splitter 9, and the first light path Each laser beam output by the beam splitter 7 and the second optical path beam splitter 9 guides into the laser frequency multiplier 10 and passes through the optical path of the laser frequency multiplier 10 on the same axis.

In a further embodiment, the first optical path beam splitter 7 is a 135° refracting mirror; the second optical path beam splitting mirror 9 is a 45° refracting mirror. In the embodiment of the utility model, the first optical path beam splitter 7 adopts a 135° refractor, and the second optical path beam splitter 9 adopts a 45° refractor, which can refract part of the laser light output by the second resonant diaphragm frame 5 into the split light gate 8 , so that the light gate 8 can be used to direct the laser light. Specifically, Fig. 2 is a schematic structural diagram of the beam splitter of the first optical path provided by the embodiment of the present invention. As shown in Fig. 2, a laser beam L1 is split by a 45° refractor to output two laser beams L2 and L3. It should be noted that the number of laser beams output by the optical beam splitter 7 can be determined according to the different requirements of teaching and training. In Fig. 2, only one laser beam L1 is split to output two laser beams through a 135° refractor Take L2 and L3 as an example, but it is not limited to outputting two laser beams.

In a further embodiment, the light indicator 2 is a red light indicator 2 . Specifically, the light indicator 2 in the embodiment of the present utility model may specifically be equipped with a 635 nanometer (nm) red light indicator 2 for positioning and debugging of the reference indicating light. The red light indicator 2 of the embodiment of the utility model is small in size and produces clear light spots, and the red light indicator 2 is used for benchmarking light positioning and debugging, and the collimation is better.

The laser optical path system includes laser optical path debugging equipment and a detection system. The laser optical path debugging equipment includes an optical base, an optical indicator, a first resonant diaphragm frame, an optical resonant cavity, a second resonant diaphragm frame, a first Optical path beam splitter, split time gate, second optical path beam splitter and laser frequency multiplier, detection system includes charge coupled device CCD camera, power meter and computer display screen; optical indicator, first resonant diaphragm frame, optical resonant cavity , the second resonant diaphragm frame, the first optical path beam splitter, the split shutter, the second optical path beam splitter, the laser frequency multiplier, the CCD camera and the power meter are all assembled in the optical base; the optical indicator, the first resonance Diaphragm frame, optical resonant cavity, second resonant diaphragm frame and first optical path beam splitter are optically connected in sequence; split light gate and laser frequency multiplier are optically connected in sequence; CCD camera is connected with laser frequency multiplier, computer display Connect with CCD camera and power meter respectively. The laser optical path debugging equipment can form an independent optical debugging module. At the same time, it has practical training functions such as Q-switching module, laser reference debugging, resonant cavity debugging and laser frequency doubling system debugging. The CCD camera in the detection system and the laser optical path debugging equipment The laser frequency multiplier is connected, the CCD camera can collect the laser spot in the laser frequency multiplier, and the computer display screen displays the collected laser spot, so that the detection system can collect the laser spot in the laser optical path debugging equipment and display the collected laser spot in real time function, so that the laser optical path system has a more comprehensive laser optical path debugging system, the research is targeted, the operation is simple, the maintenance is convenient, the laser display effect is improved, and the research effect is further improved. Further, the optical indicator, the first resonant diaphragm frame, the optical resonant cavity, the second resonant diaphragm frame, the first optical path beam splitter, the splitting shutter, the second optical path beam splitter, the laser frequency doubler, and the CCD camera and power meter are assembled on the optical base, each optical device in the laser optical system can be assembled on the optical base when in use, and can be disassembled from the optical base when not in use, so that the laser optical system and the laser optical system The advanced laser optical path debugging equipment has the function of detachable assembly and debugging, which is convenient for the operator to frequently assemble and adjust without causing equipment failure, and improves the laser display effect.

It should be noted that in the embodiment of the utility model, a Nd-doped yttrium-aluminum garnet (Nd:YAG) solid-state laser can be used as the core laser for laser debugging, and Nd:YAG is made of yttrium-aluminum garnet ( YAG) crystal is the working substance of the laser, and the Nd:YAG solid-state laser can output 1064 nanometer (nm) laser.

Fig. 3 is the structural representation of the detection system that the utility model embodiment provides, as shown in Fig. 3, detection system 30 comprises: CCD camera 31, power meter 32 and computer display screen 33, wherein, computer display screen 33 comprises display interface function keys. The detection system collects the image of the laser spot through the CCD camera, collects the laser energy parameters through the power meter, and realizes the display of the image of the laser spot and the laser energy parameters through the function keys on the display interface of the computer display.

Specifically, the function keys of the display interface include three major functions: data acquisition display, image display and system setting, among which, data acquisition display includes: "laser pulse power and energy display" and "laser image display"; image display includes "curve display ", two-dimensional image display" and "three-dimensional image display", etc.; system settings include: "basic parameter setting" and "Q-switching and frequency multiplication function setting". The function keys on the display interface can realize "display laser image", "display 2D image", "Display 3D image", "Display curve", "Display data", "Stop display data", "Display ruler scale", "Save laser image", "Save 2D image", "System settings", etc. Function.

The computer display screen can display the laser spot image collected by the CCD camera. Output the waveform diagrams of the laser in the horizontal and vertical directions through the gray value in the image. According to the optical signal collected by the CCD camera, the two-dimensional diagram of the energy distribution of the laser spot is displayed, and different colors represent different energies. According to the two-dimensional color map, the spatial three-dimensional color map distribution of the laser is displayed. According to the electrical signal given by the CCD camera and the power meter probe, the laser beam quality parameters are displayed in real time.

The function button area is mainly used to control the display and stop of the real-time image acquisition area, test curve area, three-dimensional color map of light spot, and real-time data display area, which is convenient for recording. Click "Display Laser Image" in the function button area, and the system will display the laser spot image in real time in the laser spot image. Due to the limited ability of the human eye to distinguish different gray levels, it is difficult to make full use of the spot energy distribution information contained in the laser spot gray image, but the human eye is very sensitive to color and can distinguish different brightness, color and saturation. kinds of colors. Click "Show 2D Color Map", the system will display a pseudo-color map of the energy distribution of the spot, which is helpful for the human eye to observe the shape and energy distribution of the spot. The two-dimensional color map of the spot can display the two-dimensional color map of the spot in full screen, which is convenient for observation. Click "Show 3D Image" to display the 3D distribution of the energy distribution of the spot. After the 3D visualization of the spot image, the energy information and shape of the spot can be reflected more intuitively.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (6)

1. a kind of laser light path system, it is characterised in that including：Laser optical path commissioning device and detecting system；

The laser optical path commissioning device includes：Light pedestal, optical indicator, the first resonant iris mirror holder, optical cavity, tune Q moulds Block, the second resonant iris mirror holder, the first light path spectroscope, timesharing optical gate, the second light path spectroscope and laser frequency multiplier；

The optical indicator, the first resonant iris mirror holder, the optical cavity, the tune Q module, second responant diaphragm Piece mirror holder, the first light path spectroscope, the timesharing optical gate, the second light path spectroscope and the laser frequency multiplier are filled Fit in the smooth pedestal；

The optical indicator, the first resonant iris mirror holder, the optical cavity, the tune Q module, second responant diaphragm Piece mirror holder and the first light path spectroscope light connects successively；

The timesharing optical gate and the laser frequency multiplier light connects successively；The timesharing optical gate respectively with the first light path light splitting Mirror and the second light path spectroscope light connects；

The detecting system includes：Charged coupled device CCD camera, power meter and computer display screen；The charge-coupled device Part ccd video camera and the power meter are assemblied in the smooth pedestal；The charged coupled device CCD camera swashs with described Optical sccond-harmonic generation device is connected, and the computer display screen is connected with the charged coupled device CCD camera and the power meter respectively.

2. laser light path system according to claim 1, it is characterised in that the first resonant iris mirror holder is humorous to be all-trans Vibrating diaphragm piece mirror holder；The second resonant iris mirror holder is half antiresonance diaphragm mirror holder.

3. laser light path system according to claim 1 and 2, it is characterised in that the optical cavity is by perpendicular to optical axis Two relative parallel plane mirrors or curved mirror constitute.

4. laser light path system according to claim 1 and 2, it is characterised in that the timesharing optical gate is electronic timesharing light Lock.

5. laser light path system according to claim 1 and 2, it is characterised in that the first light path spectroscope is 135 ° Refracting telescope；The second light path spectroscope is 45 ° of refracting telescopes.

6. laser light path system according to claim 1 and 2, it is characterised in that the optical indicator is feux rouges indicator.