A Precise Adjustment Device Applicable to Optical Parametric Oscillator

Abstract

The invention discloses a precision adjustment device suitable for an optical parametric oscillator, which includes a transmission rod, a transmission disc, a fixing piece, a screw rod, and an adjustment sleeve. The bottom of the sleeve is rotatably connected with the fixing piece. The fixing piece is provided with a guide rod at one end of the adjusting sleeve, and the guide rod is plugged into the screw rod. The drive disc is connected to the bottom end of the drive rod, and the upper end of the drive rod is fixed with a clamp for installing the load. Turn the adjustment sleeve, and the screw rod moves along the axis of the guide rod, so that the twill on the upper part of the screw rod The short vertical lines at the joint between the slanted portion and the drive plate can be pushed to rotate the drive plate, thereby adjusting the offset angle of the load. The present invention amplifies the adjustment precision through the cooperation of multiple threads on the screw rod, and can realize precise adjustment stably, so that the angle offset adjustment of the load crystal can be stable and controllable.

Description

technical field [0001] The invention relates to the technical field of optical parametric oscillators, in particular to a precision adjustment device suitable for optical parametric oscillators. Background technique [0002] An optical parametric oscillator is a parametric oscillator that oscillates at an optical frequency. It converts the input laser light (the so-called pump light) into two lower-frequency output lights (signal light and idler light) through the second-order nonlinear optical interaction (crystal), and the two output lights The sum of the frequencies is equal to the input optical frequency. Light will be refracted when it passes through the crystal. If there is only one crystal, lasers with different frequencies need to be turned at different angles corresponding to the crystal. Different crystal angles mean that the position of the outgoing light will change, which is not conducive to subsequent use. Generally, a pair or several pairs of crystals are ne...

AI Technical Summary

Problems solved by technology

The existing deflection angle adjustment method adopts the adjustment between threads. Although it can be adjusted in all directions without dead angles, in the actual adjustment process, the initial deflection angle does not require a large offset. A large offset error will be formed after the optical path length, so a more precise and stable adjustment method is required, so that the refraction and reflection of light can be fine-tuned to meet the needs of use

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