Anisotropy in pulsed laser performance of Nd:LYSO crystal

• Published in: Optics and laser technology 2019-04, Vol.112, p.524-529
• Main Authors: Zhou, Ying, Wang, Zhengping, Zhuang, Shidong, Zhao, Yongguang, Lu, Jianren, Xu, Xinguang
• Format: Article
• Language: English
• Subjects: Anisotropy; Emissions control; Lasers; Multi-wavelength; Nd:LYSO crystal; Neodymium lasers; Ozone; Passively Q-switching; Pulsed lasers; Q switched lasers; YAG lasers
• ISSN: 0030-3992; 1879-2545
• DOI: 10.1016/j.optlastec.2018.11.056

•Our work firstly and systematically discussed the anisotropy of pulsed laser properties in monoclinic, disordered crystal Nd:LYSO with three different orientation (x-, y- and c-cut).•By analyzing the stimulated emission cross-section and the experimental results, Nd:LYSO of three orientation performs different properties. This has guiding significance for different applications by choosing different crystal.•The Y transmission direction has much larger pump absorbing efficiency and the maximum pulse energy and the highest peak power were 150.8 μJ and 14.7 kW, respectively.•The X transmission direction is the most preferred for multi-wavelength operation, which could be adopted to be a multi- wavelength laser source to generate coherent THz waves by difference frequency. We report on a Cr:YAG Q-switched laser using monoclinic, disordered Nd:LYSO crystal as gain medium. Anisotropy in pulsed laser performances is investigated with samples in different cut directions. With Y-cut Nd:LYSO, pulse energy of 150.8 μJ and peak power of 14.7 kW are achieved at 1079 nm. However, in the case of X-cut Nd:LYSO, multi-wavelength emission at 1076, 1077.5 and 1079 nm are observed, the total pulse energy and peak power are 120.9 μJ and 7.8 kW respectively.