SU318113A1 - Device controlling and feeding lasers - Google Patents

Description

The invention relates to quantum electronics and can be used to control and power optical quantum generators (JAGs) in the mode of single or frequently repeated flashes.

A laser control and powering device is known, which contains the power supply circuit of the pump lamp and the control pulse shaping circuit.

The power circuit is a system with a buffer battery of capacitors that is continuously charged through a high-voltage rectifier from the mains. A working battery of capacitors is charged from the buffer battery through controlled valves (thyristors), which are then discharged using ignition pulses to the pump lamp of the active laser cell, and for a time to discharge the working battery and to restore the electric strength of the pump lamp (deionization time one gap), the buffer battery is disconnected by controlled valves or other key devices from the working battery and the lamp.

The control pulse shaping circuit includes a master oscillator, a thyristor control pulse driver, a delay system, and a high voltage pulse for igniting the pump lamp.

Kie, expensive and unreliable buffer batteries of capacitors and controlled valves, as well as current-limiting resistance or choke in the charge circuit of the buffer battery and choke in the charge circuit of the working battery, which reduces the efficiency of the device.

The purpose of the invention is to simplify the device and exclude the buffer capacitor bank from the circuit, increasing the reliability of the efficiency.

The goal is achieved by the fact that, in the proposed device, in the pump lamp power supply circuit, the working capacitor battery is connected directly to the output of the charging voltage rectifier (without a buffer capacitor battery, controlled valves and current-limiting elements) and in the ignition pulse generation circuit between pulse frequency divider

and a high-voltage ignition pulse driver included a coincidence circuit, one input of which is connected to the output of the differentiating circuit of the pulse frequency divider, and the other to the output of the differentiating circuit of the limiter of the synchronization signal through the inverter.

The drawing shows a block diagram of the described control and power supply of the laser in the full-wave rectifier mode and contains separate parallel circuits - the control circuit and the power supply circuit of the pump lamp. The power supply circuit of the lamp for pumping the active element of the JAG consists of a series-connected transformer 2, rectifier 3 and a working battery of capacitors 4. The ignition control circuit of the pump lamp 1 contains a transformer 5, one of the output windings of which serves as a source of synchronization signal and series-connected phase-shifting circuit 6, Doubler 7 frequency, two-sided limiter 8 of the amplitude of the voltage of the clock signal and the differentiating circuit 9. The output of the differentiating circuit is connected to the inputs of the frequency divider 10 and the inverter 11, you odes are included at the two inputs the coincidence circuit 12, the frequency divider 10 is connected to the coincidence circuit 12 via a differentiating circuit 13. The output of matching circuit connected to the input 14 of the high-voltage pulse shaper ignition, the output of which is connected to one lamp pumping. In the case of half-wave rectification of the charging voltage, the full-wave rectifier 3 is replaced with the half-wave rectifier 15 in the power supply circuit of the pump lamp 1 and the frequency doubler 7 is disconnected in the high-voltage pulse generation pulse of the pumping lamp, i.e. synchro- synchromesh signal, i.e. synchro- synchro- synchromesh signal of the pumping lamp, i.e. synchro- synchromesh of the pumping lamp, i.e. synchro- synchromesh of the pumping lamp, i.e. synchro- synchro of the pumping lamp, i.e. synchro- synchro of the pumping lamp, that is, the synchro- synchro- sync of the pumping lamp, that is. directly to the amplitude limiter 8, frequency doubler 7 min. In the case of using a three-phase AC network, it is necessary to shift the voltage of one of the phases of the network by 180 ° to obtain a period of time in which the voltage at the output of the three-phase half-wave rectifier is missing. This phase shift is realized by the corresponding switching (phasing) of the ends of the output winding of this phase of the power transformer. To ensure the ignition of the pump lamp in the obtained time interval, the three-phase network phase that precedes the shifted one should be chosen as the source of the clock signal. The pumping of an active laser element (for example, a ruby) is produced by flashes of a pulsed discharge lamp 1, which is powered by a working capacitor bank 4, charged by half-waves of a rectified sinusoidal voltage from a source of supply voltage through a power transformer 2 and a full-wave rectifier 3 or a full-wave rectifier 15. In order to obtain a high-voltage pulse of ignition of the pump lamp synchronized with the charging voltage of the working battery of capacitors 4, the supply voltage is parallel but the power transformer 2 is supplied to a low-power control power supply transformer 5. An alternating voltage (sync signal) is injected from one of the windings of this transformer with a high voltage of a power transformer 2 n in phase with the input of a phase-shifting circuit 6. In the case of a full-wave rectifier from a phase-shifting circuit, the voltage is applied to a frequency doubler 7, which will receive a pulse from the phase-shifting circuit, which will receive a frequency doubler 7, which will receive a pulse from the phase-shifting circuit, which will receive a frequency doubler 7, which will receive a pulse from the phase-shifting circuit, which will receive a frequency doubler 7, which will receive a pulse from the phase-shifting circuit. in any half-period of the charging voltage, and from the output of the doubler, to the input of a two-way limiter of 8 amplitudes. In the case of half-wave rectification, the voltage from the phase-shifting circuit 6 is directly applied to the amplitude limiter, which provides for an ignition pulse at any period of the charging voltage. A synchronized signal bounded above and below is differentiated by circuit 9. A positive pulse from the output of the differentiating circuit goes simultaneously to a divider 10 of the pulse frequency (for example, a multivibrator, a chain of trigger cells, etc.) and to the inverter AND, where the signal amplifies and changes polarity. The output signal of frequency divider 10 is differentiated by circuit 13 and is fed to one of the inputs of electronic logic circuit 12 for coincidence. At the same time, the signal from the inverter I arrives at the other input of the coincidence circuit. At the output of the logic coincidence circuit, a pulse arises only if both of its inputs receive signals simultaneously. Thus, the coincidence circuit eliminates the possibility of ignition of the pump lamp by signals that are not synchronized with the charging voltage, for example, arising from the accidental, spontaneous operation of the frequency divider. The output signal of the coincidence circuit 12 is supplied to the start of the shaper 14 of the high-voltage pulse of ignition of the pump lamp 1. At that, the phase-shifting circuit 6 is adjusted so that the ignition pulses are applied to the lamp during periods of time from the moment of half-wave reduction by the rectifier to the level of deionization potential of the pumping lamp before the point of advance of the voltage increase by the next half-wave held by the rectifier up to that level at the discharge time Yes, and deionnzatsii lamp pumping. The proposed laser control and pianos control device allows charging the working capacitor bank directly from the power amplifier. The charge of the working battery is made smoothly from a zero value of the voltage of the half-waves of the rectified sine-wave voltage, which ensures a close-to-optimum capacitor charging mode.

Yutkin's effect, and for multiple charging of large capacitor batteries.

Claims (1)

Invention Formula A control and power supply device for optical quantum generators containing a lamp supply circuit pumping an active laser element consisting of a transformer, a charging voltage rectifier and a working capacitor bank, and an ignition pulse pulse forming circuit consisting of a transformer and phase-connected phase-shifting circuits , frequency doubler, the limiter of the amplitude of the voltage of the clock signal, the differentiating circuit and the frequency divider of the pulses with a differentiating circuit at the output, characterized by That, in order to simplify the device, the Enhance Nadia} knosti and efficiency in a circuit l.shpy pump power rectifier charging voltage: Kenny directly connected to the battery operating capacitor; A matching circuit is connected in the impulse pump pulse formation circuit between the pulse frequency divider and the ignition pulse shaper, one input of which is connected to the output of the differentiating circuit of the frequency divider of the pulses, and the other input is connected to the output of an output circuit of the limiter of the voltage limiter through the inverter, which ensures the synchronization of the pulses of the ignition of the pump lamp with the supply voltage, and the ignition of the lamp is pumped at the points in time when the output voltage is straightened eat less potential deionnzatsii pump lamp.