CN221239923U - 589Nm long pulse solid laser therapeutic instrument - Google Patents
589Nm long pulse solid laser therapeutic instrument Download PDFInfo
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- CN221239923U CN221239923U CN202323076288.4U CN202323076288U CN221239923U CN 221239923 U CN221239923 U CN 221239923U CN 202323076288 U CN202323076288 U CN 202323076288U CN 221239923 U CN221239923 U CN 221239923U
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- Laser Surgery Devices (AREA)
Abstract
The 589nm long pulse solid laser therapeutic apparatus comprises a case, an intracavity sum frequency laser, an optical fiber coupling system, a therapeutic system, a central control system and a laser water cooling system. The intracavity sum frequency laser includes a first resonant cavity and a second resonant cavity. The first resonant cavity comprises a light condensation cavity, a first total reflection mirror, a first polaroid, a first output mirror and a second total reflection mirror. The second resonant cavity comprises a light condensing cavity, a third total reflecting mirror, a second polarizing plate, a second output mirror, a semi-transparent half reflecting mirror, a nonlinear sum frequency crystal, a second semi-reflecting half lens, a focusing mirror and a shaping mirror. The concentrating cavity includes a gain substance and a pump source. The 589nm long pulse solid laser therapeutic apparatus is provided with the intracavity sum frequency laser, so that compared with a dye laser, the material used by the laser is more universal and low in price, the service life is long, the maintenance interval time is long, the maintenance is simple, and the laser therapeutic apparatus is convenient to widely popularize and use.
Description
Technical Field
The utility model relates to the field of laser therapeutic equipment, in particular to a solid laser therapeutic equipment
Background
The laser has good directivity, good monochromaticity and large energy density, is an excellent light source, and common lasers are divided into a solid laser, a gas laser and a semiconductor laser. Solid state lasers are the first lasers to be discovered because they cannot maintain high power output, so that the development of solid state lasers is stagnant and gas lasers and dye lasers are rapidly developed. However, the gas laser and the dye laser have long wavelength, large volume and complex operation, and until the invention of a high-power diode, the solid laser is newly researched.
The dye laser therapeutic apparatus mainly uses the characteristic reaction of hemoglobin in the blood vessel of the diseased dermis tissue to yellow laser for treatment. Hemoglobin absorbs the yellow laser light. The blood vessel is solidified by the heat converted by the laser, so that vascular endothelial injury, thrombus formation and blood flow quiescence are caused, and finally the irradiated blood vessel is promoted to be sealed, so that the diseased blood vessel can be sealed under the condition of not damaging normal tissues. The principle can be used for improving skin problems such as telangiectasis, red nevus, hemangioma, vinasse skin, acne erythema, early scar, superficial pigment, etc.
Most of the laser therapeutic apparatuses on the market use dye lasers to emit laser, however, the dye needed by the dye lasers is expensive, and the dye laser therapeutic apparatus, the dye and the solvent thereof need to be imported from abroad, so that the production cost is high; the required dye and solvent are toxic, inflammable and volatile, harm to the health of users, have high maintenance cost and complex maintenance, and have short service lives and need to be replaced every year. Each change requires thorough cleaning of the dye circulation system.
Disclosure of utility model
In view of the above, the present utility model provides a 589nm long-pulse solid laser therapeutic apparatus which can solve the problems of short service life, difficult maintenance and high price of dye used in dye laser therapeutic apparatus, so as to meet the above-mentioned requirements.
The 589nm long pulse solid laser therapeutic equipment includes one casing, one sum frequency laser set inside the casing, one fiber coupling system set inside the casing, one therapeutic system set outside the casing, one central control system set inside the casing, and one laser water cooling system set inside the casing. The intracavity sum frequency laser includes a first resonant cavity and a second resonant cavity. The first resonant cavity comprises a light condensing cavity arranged on the first resonant cavity, at least one first total reflection mirror arranged on the first resonant cavity, at least one first polaroid arranged on the first resonant cavity, at least one first output mirror arranged on the first resonant cavity, and at least one second total reflection mirror arranged on the first resonant cavity. The second resonant cavity comprises a light condensing cavity arranged on the second resonant cavity, at least one third total reflection mirror arranged on the second resonant cavity, at least one second polaroid arranged on the second resonant cavity, at least one second output mirror arranged on the second resonant cavity, at least one semi-transparent half reflection mirror arranged on the second resonant cavity, at least one nonlinear sum frequency crystal arranged on the second resonant cavity, at least one second semi-transparent half reflection mirror arranged on the second resonant cavity, at least one focusing mirror arranged between the nonlinear sum frequency crystal and the semi-transparent half reflection mirror, and at least one shaping mirror arranged between the nonlinear sum frequency laser and the second semi-transparent half reflection mirror. The condensing cavity comprises a gain substance and a pump source.
Further, the gain substance is a yag rod.
Further, the pump source is a pulse tritium lamp.
Further, the second total reflection mirror is disposed on the optical path at an oblique 45 degree angle.
Further, the half mirror is disposed on the optical path at an oblique 45 degree angle.
Further, the nonlinear sum frequency crystal receives laser power from the first resonant cavity and the second resonant cavity respectively in a specific proportion.
Further, the condensing cavities are all connected and provided with a matched acousto-optic Q switch.
Further, the acousto-optic Q-switch is equipped with a driver controlled by an electronic time domain matching system.
Compared with the prior art, the 589nm long-pulse solid laser therapeutic instrument provided by the utility model solves the problems of high cost, complex and difficult maintenance and harm to eaters of the dye laser therapeutic instrument by using the solid laser and the frequency cavity internal frequency neutralizer. The solid laser therapeutic instrument uses the solid laser, the material used by the gain substance of the solid laser is YAG crystal, the stability is better, the solid laser therapeutic instrument is not easy to volatilize, the safety problem caused in the operation process is smaller, the maintenance is simple, and the change of the reflectivity of the lens position and the coating film is only required to be regulated, so that the whole device is not required to be replaced and cleaned. Meanwhile, the dye laser can only passively adjust Q, so that the laser cannot be controlled manually, and the output laser power is small. The solid laser uses the acousto-optic Q switch controlled by the electronic time domain system, and can lead the laser emission time on different laser resonant cavities to correspond to each other while the laser power is increased, thereby increasing the efficiency of the nonlinear sum frequency crystal for outputting laser.
Drawings
FIG. 1 is a schematic diagram of the structure of a 589nm long pulse solid laser therapeutic apparatus provided by the utility model.
Fig. 2 is a schematic structural diagram of the solid-state laser of fig. 1.
Detailed Description
Specific embodiments of the present utility model are described in further detail below. It should be understood that the description herein of the embodiments of the utility model is not intended to limit the scope of the utility model.
Fig. 1 to 2 show schematic structural diagrams of a 589nm long pulse solid laser therapeutic apparatus according to the present utility model. The 589nm long-pulse solid laser therapeutic apparatus comprises a case 10, an intracavity sum frequency laser 20 arranged in the case 10, an optical fiber coupling system 30 arranged in the case 10, a therapeutic system 40 arranged outside the case 10, a central control system 50 arranged in the case 10, and a laser water cooling system 60 arranged in the case 10. It is conceivable that the 589nm long pulse solid-state laser therapeutic apparatus further includes other functional modules, such as a coating, which are known to those skilled in the art, and will not be described herein.
The intracavity sum frequency laser 20 includes a first cavity 21 and a second cavity 22. The intracavity sum frequency laser 20 uses a solid state laser. Compared with common dye laser regulators and gas regulators, the solid laser can control the laser power, has the characteristic of long service life, and only needs to replace gain substances in maintenance. It is contemplated that the solid state laser may employ techniques of intra-cavity sum frequency, or extra-cavity sum frequency, depending on the situation.
The first resonant cavity 21 includes a light condensing cavity 211 disposed on the first resonant cavity 21, at least one first total reflection mirror 212 disposed on the first resonant cavity 21, at least one first polarizing plate 213 disposed on the first resonant cavity 21, at least one first output mirror 214 disposed on the first resonant cavity 21, and at least one second total reflection mirror 215 disposed on the first resonant cavity 21.
The condensing chamber 211 includes a gain substance 2111 and a pump source 2112.
In this embodiment, the gain substance 2111 is a yag crystal, preferably an nd.yag crystal. YAG crystal has excellent comprehensive performance, wide laser wavelength application range and relatively low price, effectively reduces production cost and is convenient for large-scale popularization.
In this embodiment, the pump source 2112 includes a laser power supply 80 disposed within the cavity and outside the frequency sum laser 20. The pump source 2112 uses a pulsed xenon lamp. The pulsed tritium lamp provides photons to the gain substance 2111 to cause the gain substance 2111 to generate more photons, thereby causing lasing. Preferably, the pulse xenon lamp uses a high-quality ultraviolet filtering quartz tube as a lamp tube material and uses a high-quality density electrode as a xenon lamp electrode, so that the pulse xenon lamp has the characteristics of strong loading capacity, high pumping efficiency, good laser beam quality and long service life. It is conceivable that the pump source may also select other light sources depending on the situation.
In this embodiment, the first resonant cavity 21 is a 1319nm resonant cavity, the first total reflection mirror 212 is a 1319nm total reflection mirror, the first polarizer 213 is a 1319nm polarizer, the first output mirror 214 is a 1319nm output mirror, and the second total reflection mirror 215 is a 1319 total reflection mirror inclined by 45 ° and disposed in the cavity.
The polarizer changes natural light without polarization direction into polarized light with the same vibration direction of the photoelectric field.
The second resonant cavity 22 includes a condensing cavity 211 disposed on the second resonant cavity 22, at least one third total reflection mirror 221 disposed on the second resonant cavity 22, at least one second polarizing plate 222 disposed on the second resonant cavity 22, at least one second output mirror 223 disposed on the second resonant cavity 22, at least one half-reflection mirror 224 disposed on the second resonant cavity 22, at least one nonlinear sum frequency crystal 225 disposed on the second resonant cavity 22, at least one second half-reflection mirror 226 disposed on the second resonant cavity 22, a focusing mirror 227 disposed between the nonlinear sum frequency crystal 225 and the half-reflection mirror 224, and at least one shaping mirror 228 disposed between the nonlinear sum frequency laser 225 and the second half-reflection half-mirror 226.
The nonlinear sum frequency crystal 225 is used to convert the laser light received from within the first or second resonant cavity 21, 22 into laser light of a new wavelength. The nonlinear sum frequency crystal 225 receives laser power from the first or second resonant cavities 21, 22, respectively, in a specific proportion, increasing the conversion efficiency of the new wavelength.
The focusing mirror 227 is only for focusing the laser light passing through the half mirror 224 to the nonlinear sum frequency crystal 225 to obtain a fine high power density spot. The shaping mirror 228 is used to modify the output beam so that the beam is more uniformly concentrated.
The resonant cavity is provided with the acousto-optic Q switch. The first resonant cavity 21 is provided with a first acousto-optic Q-switch 216, and the second resonant cavity 22 is provided with a second acousto-optic Q-switch 229. The acousto-optic Q switch provides ultrasonic stimulation for the resonant cavity, and Q-switching enables the power of laser to be larger and more concentrated. The acousto-optic Q-switch is equipped with a driver 70 controlled by an electronic time domain matching system to ensure that the laser pulses emitted by the first and second resonators 21, 22 to the nonlinear sum frequency crystal 225 are aligned in the time domain.
In this embodiment, the second resonant cavity 22 is a 1064nm resonant cavity, the third total reflection mirror 221 is a 1064nm total reflection mirror, the second polarizing plate 222 is a 1064nm polarizing plate, the second output mirror 223 is a 1064nm output mirror, the half-transparent half-reflection mirror 224 is disposed on an optical path at an angle of 45 degrees, and is fully transmissive to 1064nm at 1319nm, the second half-reflection half-lens 226 is disposed on the optical path at an angle of 45 degrees, and is fully reflective to 1319nm and 1064nm at 598nm, the first acousto-optic Q switch 216 is a 1319nm acousto-optic Q switch, and the second acousto-optic Q switch is a 1064nm acousto-optic Q switch.
The laser light in the first resonator 21 is generated from the light-condensing chamber 211 and amplified by reflection from the lens. The laser light is reflected by the first total reflection mirror 212, transmitted through the first polarizing plate 213, and reaches the first output mirror 214. The laser light is reflected by the first output mirror 214 to the second total reflection mirror 215, reflected from the second total reflection mirror 215 to the half mirror 224, and reflected from the half mirror 224 to the nonlinear sum frequency crystal 225.
The laser light in the second resonator 22 is generated from the light condensing chamber 211, transmitted through the second polarizer 222 from the third total reflection mirror 221, and reaches the second output mirror 223. The laser is reflected by the second output mirror 223, transmitted through the semi-transparent semi-reflective mirror 224, and reaches the nonlinear sum frequency crystal 225, the two laser beams are focused to the nonlinear sum frequency crystal 225 by the focusing mirror 227 to generate new laser beams, the new laser beams are transmitted through the shaping mirror 228, and transmitted from the second semi-reflective semi-lens 226 to leave the second resonant cavity 22.
The laser cooler 60 is used for cooling the pulse xenon lamp, the YAG rod and the condensing cavity, reducing the temperature and reducing the heat consumption. The light condensation cavities 211 are all connected with the laser water chiller 60.
Compared with the prior art, the 589nm long-pulse solid laser therapeutic instrument provided by the utility model solves the problems of high cost, complex and difficult maintenance and health hazard of dye laser therapeutic instruments by using solid laser and the frequency cavity internal frequency neutralizer 20. The 589nm long pulse solid laser therapeutic apparatus uses a solid laser, the material used by the gain substance of the solid laser is YAG crystal, the solid laser has better stability, is not easy to volatilize, has smaller safety problem in the operation process, is simple to maintain, and only needs to adjust the position of a lens and change the reflectivity of a coating film, and does not need to replace and clean the whole device. Meanwhile, the dye laser can only passively adjust Q, manual work can not be controlled, the emitted laser power is smaller, the solid laser uses an acousto-optic Q switch controlled by an electronic time domain system, laser power is increased, laser emission time on different laser resonant cavities can be mutually corresponding, and the efficiency of the nonlinear sum frequency crystal 224 for outputting laser is increased.
The above is only a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model, and any modifications, equivalent substitutions or improvements within the spirit of the present utility model are intended to be covered by the claims of the present utility model.
Claims (8)
1. A 589nm long pulse solid laser therapeutic apparatus, which is characterized in that: the 589nm long-pulse solid laser therapeutic apparatus comprises a case, an intracavity sum frequency laser arranged in the case, an optical fiber coupling system arranged in the case, a therapeutic system arranged outside the case, a central control system arranged in the case, and a laser water cooling system arranged in the case, wherein the intracavity sum frequency laser comprises a first resonant cavity and a second resonant cavity, the first resonant cavity comprises a light collecting cavity arranged on the first resonant cavity, at least one first total reflecting mirror arranged on the first resonant cavity, at least one first polarizing plate arranged on the first resonant cavity, at least one first output mirror arranged on the first resonant cavity, at least one second total reflecting mirror arranged on the first resonant cavity, at least one light collecting cavity arranged on the second resonant cavity, at least one third total reflecting mirror arranged on the second resonant cavity, at least one second resonant cavity arranged on the second resonant cavity, at least one second semi-linear reflecting mirror arranged on the second resonant cavity, at least one semi-linear reflecting mirror arranged on the semi-linear reflecting mirror, at least arranged on the semi-linear reflecting mirror, and the semi-linear reflecting mirror arranged on the semi-reflecting mirror.
2. The 589nm long pulse solid state laser therapeutic apparatus according to claim 1, wherein: the gain substance is a yag rod.
3. The 589nm long pulse solid state laser therapeutic apparatus according to claim 1, wherein: the pumping source is a pulse tritium lamp.
4. The 589nm long pulse solid state laser therapeutic apparatus according to claim 1, wherein: the second total reflection mirror is arranged on the light path at an inclined angle of 45 degrees.
5. The 589nm long pulse solid state laser therapeutic apparatus according to claim 1, wherein: the semi-transparent half reflecting mirror is arranged on the light path at an inclined angle of 45 degrees.
6. The 589nm long pulse solid state laser therapeutic apparatus according to claim 1, wherein: the nonlinear sum frequency crystal receives laser power from the first resonant cavity and the second resonant cavity respectively in a specific proportion.
7. The 589nm long pulse solid state laser therapeutic apparatus according to claim 1, wherein: and the light condensing cavities are connected with an acousto-optic Q switch which is matched.
8. The 589nm long pulse solid state laser therapeutic apparatus according to claim 7, wherein: the acousto-optic Q-switch is equipped with a driver controlled by an electronic time domain matching system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323076288.4U CN221239923U (en) | 2023-11-15 | 2023-11-15 | 589Nm long pulse solid laser therapeutic instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323076288.4U CN221239923U (en) | 2023-11-15 | 2023-11-15 | 589Nm long pulse solid laser therapeutic instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221239923U true CN221239923U (en) | 2024-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323076288.4U Active CN221239923U (en) | 2023-11-15 | 2023-11-15 | 589Nm long pulse solid laser therapeutic instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221239923U (en) |
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- 2023-11-15 CN CN202323076288.4U patent/CN221239923U/en active Active
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