退化共焦谐振器。

Degenerated confocal resonato.

作者信息

Hodgson N, Ozygus B, Schabert F, Weber H

出版信息

Appl Opt. 1993 Jun 20;32(18):3190-200. doi: 10.1364/AO.32.003190.

DOI:10.1364/AO.32.003190

PMID:20829932

Abstract

The properties of confocal resonators with g(1) = g(2) = 0 and with one mirror confined by an aperture were investigated both theoretically and experimentally. The fundamental mode operation with complete filling of the medium, which ds located near the unconfined mirror, can always be obtained by an appropriate choice of the aperture radius. Numerical calculations based on Fresnel integrals, including the amplification of the gain medium, provide a detailed understanding of the resonator properties, with guidelines for an optimum resonator performance. Diffraction loss, mode structure, beam quality, extraction efficiency, and misalignment sensitivity of these resonators are measured with a pulsed Nd:YAG laser in a single-shot operation.

摘要

对g(1)=g(2)=0且一个反射镜由孔径限制的共焦谐振器的特性进行了理论和实验研究。通过适当选择孔径半径，总能在位于无限制反射镜附近、介质完全填充的情况下实现基模运转。基于菲涅耳积分的数值计算，包括增益介质的放大，能详细了解谐振器特性，并给出优化谐振器性能的指导原则。用脉冲Nd:YAG激光器在单次运转中测量了这些谐振器的衍射损耗、模式结构、光束质量、提取效率和失调灵敏度。