Intra-cavity immersion diffuser for low-coherence generation in dye and solid-state lasers
Intra-cavity immersion diffuser for low-coherence generation in dye and solid-state lasers
复制标题
用于染料和固态激光器中低相干性产生的腔内浸入式扩散器
DOI：
10.1007/s00340-022-07951-3
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
I. Tupitsyn
中科院分区：
文献类型：
--
作者：
O. Burdukova;E. Cheshev;A. Koromyslov;V. Petukhov;Y. Senatsky;I. Tupitsyn
一个比色皿与一个稠密的浸没混合物的LiF微粒和异丁醇中使用的染料和Nd：YAG激光器的谐振腔作为一个小角度的扩散，以获得低相干产生。在532 nm/25 ns单脉冲泵浦下，PM 567; Rh 101; DCM染料激光器在有光杯扩散器的情况下，输出具有空间相干度的光束;在Nd：YAG激光器在有光杯扩散器的情况下，在808 nm准连续激光器泵浦下，通过控制光杯的浸没状态，输出具有空间相干度的光束。给出了在比色皿中温度、辐射波长或混合物组成变化时的激光束轮廓图。定义了对应于漫射器“初始状态”的温度，该漫射器具有在可见光和近红外光谱区域中的不同激光波长的最大浸没水平和比色皿透射率。本文考虑了一种描述激光器在工作状态（低相干激光）下工作的唯象模型。讨论了在可见光和近红外光谱区的各种波长下，使用浸没式扩散器在染料和固态激光器中获得低相干输出的可能性。
A cuvette with a dense immersion mixture of LiF microparticles and isobutyl alcohol was used in resonators of dye and Nd:YAG lasers as a small-angle diffuser to obtain low-coherent generation. Beams with the degree of spatial coherencewere obtained at the output of PM567; Rh101; DCM dye lasers with a cuvette-diffuser under pumping by 532 nm/25 ns single shot pulses, and in Nd:YAG laser with a diffuser under 808 nm QCW LD pumping when controlling the state of immersion in the cuvette. Illustrations of laser beam profiles at changes in the temperature, radiation wavelength or the mixture composition in the cuvette are presented. Temperatures corresponding to the diffuser “initial state” with the maximum level of immersion and cuvette transmission for different laser wavelengths in the visible and near-IR spectral regions were defined. A phenomenological model describing the operation of a laser with a diffuser in the “working state” (low-coherent lasing) is considered. The possibility of use of an immersion diffuser to obtain low-coherence output in dye and solid-state lasers at various wavelengths in the visible and near-IR spectral regions is discussed.