A Novel Method for Precision Measurement and Result Optimization of Detuning Angle for KDP Crystals
Honghong Wu, Guoqing Pei, Dongya Chu, Yuting Wu, Han Gu, Siyu Wu, Chenzhuo Wang, Wanlai Zhu, Hai Zhou, Dongxia Hu
TL;DR
This paper introduces a new device for accurately measuring and optimizing the detuning angle of KDP crystals used in harmonic conversion.
Contribution
A precision measuring instrument for detuning angle in KDP crystals with error analysis and optimization formulas is developed.
Findings
The device achieves an average measurement error of 72.78 urad for detuning angle.
Optimized detuning angle values are calculated for two crystal types under 45° online conditions.
Error sources and positioning effects on measurement accuracy are analyzed.
Abstract
In this paper, we investigate the theory of energy distribution when divergent light undergoes harmonic conversion in KDP crystals, and based on this theory, we design and construct a precision measuring instrument for the detuning angle of (KDP) Crystals (MIDC). The device can obtain the detuning angle of the crystal by a single measurement with an average measurement error of 72.78 urad. At the same time, it also has the function of scanning the full aperture of the crystals. Using the MIDC, it is possible to quickly measure the KDP crystal at a single point and quickly scan the crystal detuning angle at full aperture. In addition, we conduct a theoretical study on the variation of detuning angle caused by gravity-influencing factors under online conditions, propose an optimization formula for the offline measurement results of detuning angle, and calculate the optimized values of…
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Taxonomy
TopicsOptical Systems and Laser Technology · Photorefractive and Nonlinear Optics · Optical and Acousto-Optic Technologies