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A hybrid electrode Pockels cell and time-division circuit driving method

A Pockels cell and mixed electrode technology, applied in the direction of circuits, electrical components, laser components, etc., can solve the problems of reducing the static extinction ratio of switches, low damage threshold, high thermal conductivity, etc., to avoid damage and clamping stress , reduce the effect of stress accumulation

Active Publication Date: 2021-05-04
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The switch crystal and the heat sink are sealed by direct contact mechanical compression. The direct contact sealing method has the following problems: the damage of the sol-gel anti-reflection film plated on the crystal; the stress generated in the crystal after compression Reduced switch static extinction ratio; thermal stress due to limited thermal expansion of the crystal in high average power applications results in higher switching thermal depolarization losses
In addition, the switch uses metal as the backside electrode, which has the advantages of good electrical conductivity and high thermal conductivity, but it is used as a mirror at the same time, and the damage threshold is too low, so it cannot be applied under high-flux conditions

Method used

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  • A hybrid electrode Pockels cell and time-division circuit driving method
  • A hybrid electrode Pockels cell and time-division circuit driving method
  • A hybrid electrode Pockels cell and time-division circuit driving method

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Embodiment 1

[0035] like figure 1 , figure 2 and image 3 As shown, a mixed electrode Pockels cell, which includes a Pockels cell shell 1, a light window 3, a discharge chamber 7, a DKDP crystal 2, a high mirror 4, a conical discharge needle 8, an electrode ring 9, an electrode Seat 5, air intake nozzle 6, circuit module and temperature control module; said Pockels cell housing 1 is provided with air intake nozzle 6, said air intake nozzle 6 communicates with discharge cavity 7, A light window 3 is arranged outside the discharge chamber 7, an electrode ring 9 is arranged inside the discharge chamber 7, a tapered discharge needle 8 is arranged inside the electrode ring 9, and the inner end of the electrode ring 9 and the electrode seat 5 connected, the electrode holder 5 is connected to the Pockels cell housing 1;

[0036] The Pockels cell housing 1 is provided with a circular hole 10, the DKDP crystal 2 is embedded in the circular hole 10, and the two surfaces of the DKDP crystal 2 are...

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Abstract

The invention discloses a mixed electrode Pockels cell and a time-divided circuit driving method thereof, which realize efficient cooling of the Pockels cell and low-voltage fast-response driving. The basic structure of the mixed electrode Pockels cell is a discharge cavity and a high A sandwich structure consisting of a Z-cut DKDP crystal is sandwiched between the mirrors. The longitudinal electro-optic effect is used and the longitudinal conduction is cooled. The discharge cavity is used as the laser incident side electrode. The caliber of the Er box can be calibrated and enlarged, can withstand high average power density, can operate at high throughput repetition rate, has low driving voltage, and fast response time, and is suitable for high-energy repetition frequency laser systems.

Description

technical field [0001] The invention belongs to the technical field of high-energy repetition-frequency lasers, and in particular relates to a mixed-electrode Pockels cell which can be used in high-energy repetition-frequency laser systems, which can be calibrated and enlarged, can withstand high average power density, and can operate at a high-flux repetition frequency. , and the time-division loop driving method of this Pockels cell. Background technique [0002] In recent years, driven by the demand for high-energy density physics research and fusion energy research, diode-pumped high-energy repetition-frequency solid-state laser technology has developed rapidly, and has achieved output of about 100J and 10Hz. Limited by the pumping power of the diode, the laser driver usually uses a gain medium with a longer upper energy level lifetime. According to Einstein's radiation theory, a long upper energy level lifetime means a smaller stimulated emission cross section. In order...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/115H01S3/10
CPCH01S3/10H01S3/115
Inventor 张君张雄军龙蛟田晓琳郑建刚林东晖张军伟吴登生王振国蒋新颖严雄伟粟敬钦胡东霞郑奎兴朱启华魏晓峰
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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