RU2265939C1 - Device for powering optical quantum generator - Google Patents

Abstract

FIELD: pulse equipment.

SUBSTANCE: device has power source, pulse lamp and ignition transformer, first and second capacitors, first and second valves, first and second diodes, first, second, third and fourth thyristors. First thyristor, first valve, fourth thyristor and second capacitor are connected serially, and connected to power source. Third thyristor and first capacitor are connected in parallel to fourth thyristor and second capacitor. Second thyristor and second valve, and also second diode are connected in parallel to first capacitor. First diode is connected in parallel to first valve. Second capacitor is connected in parallel to pulse lamp and secondary winding of ignition transformer.

EFFECT: higher efficiency of device due to use of powering of quantum optical generator lamp immediately from autonomous direct-current power source with stabilization of emission energy from pulse to pulse.

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Description

The present invention relates to the field of pulsed technology and can be used in the formation of pulses of laser ignition.

A laser device is known comprising a first charge-discharge unit that passes a charge accumulated by a capacitor through a thyristor and a lamp forming a pumping light pulse, a second charge-discharge unit that passes a charge accumulated by a capacitor through a thyristor and discharges it through a lamp, wherein the capacity of the second capacitor is less than the capacity of the first capacitor, a discharge control unit that controls the gates of the thyristors so that the start of the discharge of the second unit is delayed by a certain period of time and relatively discharge of the first block [1].

Known pulsed laser device containing a direct current source, several capacitors charged from the source, several flash lamps connected to the respective capacitors and light up when a trigger pulse is applied, a laser generator for generating laser pulses when the flash lamps light up, voltage sensors that record voltage at the terminals of the capacitors, a unit for recording the anomalous operating mode of flash lamps depending on the output signals of the sensors [2].

A disadvantage of the known devices is the inability to pump laser tubes directly from the power source.

The closest technical solution (prototype) to the present invention is a device for pumping laser, containing an AC power source, the output of which is connected to the first and second lining of the first capacitor, the first lining of which is connected to the first output of the element from on-parallel connected thyristors, the second output which is connected to the first lining of the second capacitor, a pump lamp, the input of the control unit is connected to an AC power source, and the first and second outputs are connected to the control m to the electrodes of the element from counter-parallel connected thyristors, as well as an ignition transformer, a group of counter-parallel connected diodes connected between the first plate of the first capacitor and the first output of the pump lamp, the second terminal of which is connected through the first winding of the ignition transformer to the second terminal of the first capacitor, which through the second winding of the ignition transformer is connected to the second terminal of the second capacitor.

A disadvantage of the known device is its low efficiency due to the lack of the ability to pump the lamp of the laser directly from the power source, the lack of autonomy of the device.

Using the proposed technical solution, a new technical result is achieved, which consists in increasing the efficiency of the device due to the use of pumping of an OKG lamp directly from an autonomous DC power supply with stabilization of the radiation energy from pulse to pulse.

In accordance with the invention, the technical result is achieved in that the device for pumping the laser, containing a power source, an ignition transformer and a pulsed lamp, further comprises a first and second capacitors, first and second chokes, first and second diodes, first, second, third and fourth thyristors, wherein the first thyristor, the first choke, the fourth thyristor and the second capacitor are connected in series and connected to a power source, the third thyristor and the first condenser are connected in series a fourth parallel connected thyristor and the second capacitor, a second thyristor connected in series and a second inductor and a second diode connected in parallel with the first capacitor, a first diode connected parallel to the first throttle, a second capacitor connected in parallel with the lamp pulse and connected with it in series the secondary winding of the ignition transformer.

In addition, the power source is made in the form of a capacitive storage.

In addition, the power source is made in the form of a battery.

Figure 1 presents a block diagram of the proposed device for pumping laser, figure 2 - electrical diagram of the device, figure 3 is a timing diagram of the voltage pulse on the load.

The OKG pumping device comprises a power source 1, to which a first thyristor 2 is connected in series, a first choke 3 with a diode 4 connected in parallel to it, a fourth thyristor 5, a flash lamp 6 and an ignition transformer 7; the third thyristor 8 is connected in series to the first capacitor 9 and the second diode 10 connected in parallel and installed in parallel with the power supply 1, the first thyristor 2 and the first inductor 3; the second thyristor 11 with a second choke 12 connected in series with it is connected in parallel to the first capacitor 9; the second capacitor 13 is connected in parallel with the pulse lamp 6 and the secondary winding of the ignition transformer 7 connected to it.

The device for pumping the laser works as follows. In order to form a pump pulse of a certain duration on a load - a pulse lamp 6, the first 2 and fourth 5 thyristors are switched on. Pulse lamp 6 is connected to power source 1. Next, the third thyristor 8 opens and connects the first capacitor 9 to power source 1. Now, in parallel with the circuit, the power supply is the first inductor - fourth thyristor - the flash lamp is turned on by the power supply - first inductor - third thyristor - first a capacitor, which creates a sharp voltage drop on the anode of the fourth thyristor 5 due to the first inductor 3. The second capacitor 13, charged to the voltage of the power source 1, begins to discharge through the fourth thyristor 5, the third thyristor 8 and the first capacitor 9, thereby creating a reverse current through the fourth thyristor 5. The fourth thyristor 5 closes and disconnects the power supply 1 from the flash lamp 6. To prepare the circuit for the next cycle, it is necessary to open the second thyristor 11, and discharge will occur first capacitor 9.

The proposed scheme allows you to work at a frequency of 50 Hz. The duration of the pump pulse can be changed by changing the moments of inclusion of the thyristors, which makes it possible to change the radiation energy of the laser.

The second diode 10 is installed to protect the second thyristor 11 from voltage surge. The first inductor 3 reduces the inrush current when closing the thyristor. To pump an OKG lamp, you need a power source with a power of several megawatts (depending on the type of lamp), which can be built on the basis of chemical current sources according to a combined scheme using molecular capacitors acting as a power sharpener and a high-voltage voltage source acting as a buffer energy source for the charge of molecular capacitors. Molecular capacitor batteries are created on the basis of capacitive storage devices of the type MNE - 3/60 or 24PP - 30 / 0.003; rechargeable batteries - 10NKB - 90, as a buffer source of energy.

Figure 3 shows a diagram of the voltage pulse on the lamp.

Ignition transformer 7 is a pulse transformer, on the primary winding of which a pulse U1 = 4.5 kV with a duration of 3.4 μs is supplied, and an ignition pulse U2 = 30-35 kV of the same duration is formed on the secondary winding.

The proposed pump circuit of the OKG lamp allows the operation of a pulsed lamp with a frequency of 50 Hz, while the known schemes allow working with a frequency of 2-3 Hz, while pumping is carried out directly from the power source.

From the above it follows that the proposed technical solutions have advantages over the known ones, namely:

1. The implementation of pumping a flash lamp directly from the power source.

2. Ensuring the frequency mode of operation of the laser by reducing the time off the lamp with an increase in the frequency of repetition of the generation of the lamp.

3. An increase in the output power of the laser.

4. Saving power consumption of the power source.

5. Light weight and dimensions of the device due to the lack of storage capacitors.

6. High speed with significant values of switched power due to the lack of intermediate processes in the storage capacitors.

7. The rectangular shape of the pump pulse.

8. The ability to smoothly adjust the duration of the radiation pulse without changing the power timing chains.

Therefore, the proposed device when used gives a new technical result, which consists in increasing the efficiency of pumping a pulsed laser.

Based on the application materials, a prototype device was manufactured at the enterprise at the time, which, when tested, confirmed the achievement of the above technical result.

SOURCES OF INFORMATION

1. Copyright St. Japan No. 60-26314, MKI H 01 S 3/092, 1985

2. Copyright sv. Japan No. 58-45836, MKI B 01 S 3/092, 1983

3. Copyright application. USSR No. 4699034, gender. dec. from 11.26.90, MKI N 03 K 3/53 (prototype).

4. Belostotsky B.R. et al. "Fundamentals of Laser Engineering", ed. Ak. Prokhorova A.M., Moscow, Sov. Radio, 1972

5. Shmelev KD, Korolev GV "Laser Power Supplies" ed. Vakulenko V.M., Moscow, Energy Publishing House, 1981

Claims (3)

1. The device for pumping the laser, containing a power source, a pulsed lamp and an ignition transformer, characterized in that it introduced the first and second capacitors, the first and second chokes, the first and second diodes, the first, second, third and fourth thyristors, the first thyristor, the first inductor, the fourth thyristor and the second capacitor are connected in series and connected to a power source, the third thyristor and the first capacitor are connected in series to the fourth thyristor connected in series and the second capacitor, the second thyristor and the second inductor connected in series, as well as the second diode are connected in parallel with the first capacitor, the first diode is connected in parallel with the first inductor, the second capacitor is connected in parallel with the pulse lamp and the secondary ignition transformer connected in series with it. 2. The device according to claim 1, characterized in that in it the power source is made in the form of a capacitive storage. 3. The device according to claim 1, characterized in that in it the power source is made in the form of a battery.

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