﻿ 一种新型LD大面泵浦周期性增益Nd:YVO<sub>4</sub>板条晶体的理论分析

# 一种新型LD大面泵浦周期性增益Nd:YVO4板条晶体的理论分析Theoretical Analysis of the Output of a Diode Face-Pumped Nd:YVO4 Slab Laser with Periodic Gain

The theoretical analysis of the output of a diode face-pumped Nd:YVO4 slab laser structure with periodic gain is presented, with which in-phased locked output with highly spatially suppressed single-peak intensity distribution could be obtained. We demonstrate respectively that the intensity of the far field distribution with the filling factor of the periodic gain being 60%, 70%, 80%, 90% and obtain a suppressed far-field single peak with barely side-lobes. We discuss the difference of the far-field single-peak intensity distribution between the uniform periodic gain and non- uniform periodic gain, and get the result that the non-uniform periodic gain distribution makes the far-field single-peak rough and asymmetrical.

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