Longitudinal pockels cell employing ionic liquid as electrode

Abstract

The invention discloses a longitudinal pockels cell employing ionic liquid as an electrode, and belongs to the field of high-power laser devices. The ionic liquid is adopted as the electrode of the longitudinal pockels cell; protective light windows are arranged on light-pass surfaces on two sides of electro-optical crystal of the longitudinal pockels cell, and are sealed with an outer light window to form an ionic liquid cavity; the ionic liquid in the ionic liquid cavity adopts a thin-layer state as the electrode, so that the longitudinal pockels effect is achieved. According to the longitudinal pockels cell employing the ionic liquid as the electrode, a high-voltage gas is not needed to discharge electricity to form a plasma electrode; the drive voltage of the longitudinal pockels cell is lower than that of the plasma electrode pockels cell; the system is simple in structure, large in caliber and low in cost; the ionic liquid electrode is free of damaging threshold limitation; the longitudinal pockels cell can be applied to Q modulation and inter-stage isolation of the laser device.

Description

technical field [0001] The invention belongs to the technical field of high-power lasers, and in particular relates to a longitudinal Pockels cell using ionic liquid as an electrode. Background technique [0002] The plasma electrode Pockels cell has been developed from LLNL (Livermore National Laboratory) to the present, and there are two working methods: [0003] The original plasma electrode Pockels cell (PEPC) is composed of two discharge chambers and an electro-optic crystal in the middle. Each of the two discharge chambers has a pair of discharge cathode-anode. After the vacuum system evacuates the discharge chamber, inject working gas , the high-voltage pulse output by the plasma discharge pulse generator is respectively added between the cathode and the anode in the two discharge chambers to generate glow discharge and form a large area of ​​plasma covering both sides of the crystal. At this time, the pulse high voltage output by the switch pulse generator is added ...

AI Technical Summary

Problems solved by technology

[0005] The principle of the plasma electrode Pockels cell is to obtain a high-conductivity plasma electrode through gas discharge, so the working voltage is relatively high, even for the DKDP (dideuterium potassium phosphate crystal) crystal with a half-wave voltage of only about 8kV, its working The voltage is still as high as 16kV or more, and the cost of the driving source remains high; in order to achieve stable gas discharge, the plasma electrode Pockels cell needs to be connected with an expensive charging and exhausting system, the structure is complex, and the system cost is high. These limitations limit Its application in the field of low-cost small-diameter Q-switching switch

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