Abstract

A passively Q-switched 214.8-nm Nd:YAG/Cr⁴⁺:YAG microchip laser system for the detection of NO was designed, constructed, and tested. The system uses the fifth harmonic of the 1.074-µm transition in Nd:YAG to detect NO by laser-induced fluorescence. A significant challenge was the development of an environmentally stable coating to provide the necessary discrimination between the 1.074-µm laser line and the stronger transition at 1.064 µm. The exact position of the fifth-harmonic frequency was determined by use of NO fluorescence excitation spectra to be 46556 ± 1.5 cm^-1. With a pulse energy of approximately 50 nJ of fifth-harmonic light, we observed a detection sensitivity for NO of approximately 15 parts per billion by volume in a simple, compact optical system.

© 2000 Optical Society of America

Diode-pumped self-Q-switched single-frequency 946-nm Nd³⁺,Cr⁴⁺:YAG microchip laser

Lanbin Lv, Ling Wang, Panming Fu, Xiaobo Chen, Zhiguo Zhang, Volker Gaebler, Dehua Li, Baining Liu, Hans J. Eichler, Shiwen Zhang, Anhan Liu, and Zhen Zhu
Opt. Lett. 26(2) 72-74 (2001)

Passively Q-switched diode-pumped continuous-wave Nd:YAG–Cr⁴⁺:YAG laser with high peak power and high pulse energy

Jie Song, Cheng Li, Nam Seong Kim, and Ken-ichi Ueda
Appl. Opt. 39(27) 4954-4958 (2000)

Passively Q-switched Nd:YAG/Cr⁴⁺:YAG bonded crystal microchip laser operating at 1112  nm and its application for second-harmonic generation

S. G. Fu, X. Y. Ouyang, and X. J. Liu
Appl. Opt. 54(29) 8804-8807 (2015)

Laser-diode-pumped Cr⁴⁺,Nd³⁺:YAG with self-Q-switched laser output of 1.4 W

Jun Dong, Peizhen Deng, Yutian Lu, Yinghua Zhang, Yupu Liu, Jun Xu, and Wei Chen
Opt. Lett. 25(15) 1101-1103 (2000)

Single-longitudinal-mode-operated, passively Q-switched Nd:YAG/Cr⁴⁺:YAG microchip laser with >100 kHz repetition rate and <400 ps pulse width

Tao Chen, Xin Chen, Chenglin Zhou, Ming Li, and Rong Shu
Appl. Opt. 59(13) 4191-4197 (2020)