Precision adjusting device suitable for optical parametric oscillator

Abstract

The invention provides a precision adjusting device suitable for an optical parametric oscillator. The device comprises a transmission rod, a transmission disc, a fixing piece, a lead screw and an adjusting sleeve, the adjusting sleeve is in threaded connection with the bottom, provided with a threaded part, of the lead screw, the bottom of the adjusting sleeve is rotationally connected with the fixing piece, and a guide rod is arranged at the end, located in the adjusting sleeve, of the fixing piece; the guide rod is inserted into the lead screw, inclined lines on the upper portion, providedwith inclined line parts, of the lead screw are meshed with vertical lines on the short section of the transmission disc, the transmission disc is connected with the bottom end of the transmission rod, the upper end of the transmission rod is fixedly connected with a clamp used for installing a loaded object, the adjusting sleeve is rotated, and the lead screw moves in the axis direction of the guide rod; the inclined lines on the upper portion of the lead screw can push the short-section vertical lines at the meshing position of the inclined line parts and the transmission disc so as to rotate the transmission disc, and therefore the deviation angle of the loaded object can be adjusted. According to the invention, through multiple screw-thread fit on the lead screw, the adjustment precision is amplified, and precision adjustment can be stably realized, so that the angle deviation adjustment of the loaded 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 precise 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 second-order nonlinear optical interaction (crystal), the two output light The sum of frequencies is equal to the input optical frequency. Light will be refracted when passing through the crystal. If there is only one crystal, lasers of different frequencies need to rotate at different angles corresponding to the crystal. Different crystal angles mean that the position of the emitted light will change, which is not conducive to subsequent use. It is generally necessary to use a pair or several pairs of crystals to adju...

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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