钕钇铝石榴石（Nd:YAG）晶体粉末中的随机激光作用

Random Laser Action in Nd:YAG Crystal Powder.

作者信息

Azkargorta Jon, Iparraguirre Iñaki, Barredo-Zuriarrain Macarena, García-Revilla Sara, Balda Rolindes, Fernández Joaquín

机构信息

Departamento de Física Aplicada I, Escuela Superior de Ingeniería, Universidad del País Vasco UPV/EHU, Alameda Urquijo s/n, Bilbao 48013, Spain.

Materials Physics Center, CSIC-UPV/EHU, San Sebastián 20018, Spain.

出版信息

Materials (Basel). 2016 May 13;9(5):369. doi: 10.3390/ma9050369.

DOI:10.3390/ma9050369

PMID:28773495

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5503076/

Abstract

This work explores the room temperature random stimulated emission at 1.064 μm of a Nd:YAG crystal powder (Neodymium-doped yttrium aluminum garnet) in a very simple pump configuration with no assistance from an internal mirror. The laser threshold energy as a function of pump beam area and pump wavelength has been measured, as well as the temporal dynamics of emission pulses. The absolute energy of stimulated emission and the absolute laser slope efficiency have been measured by using a method proposed by the authors. The results show a surprising high efficiency that takes the low Nd ion concentration of the crystal powder into account.

摘要

这项工作探索了在非常简单的泵浦配置下，没有内部反射镜辅助时，掺钕钇铝石榴石（Nd:YAG）晶体粉末在1.064μm波长处的室温随机受激辐射。测量了激光阈值能量与泵浦光束面积和泵浦波长的函数关系，以及发射脉冲的时间动态。通过作者提出的一种方法测量了受激辐射的绝对能量和绝对激光斜率效率。结果表明，考虑到晶体粉末中钕离子浓度较低，其效率出奇地高。