通过准相位匹配的LiNbO₃中二极管泵浦的4.6微米差频产生来检测空气中的一氧化碳。

Detection of CO in air by diode-pumped 4.6-microm difference-frequency generation in quasi-phase-matched LiNbO(3).

作者信息

Petrov K P, Goldberg L, Burns W K, Curl R F, Tittel F K

出版信息

Opt Lett. 1996 Jan 1;21(1):86-8. doi: 10.1364/ol.21.000086.

DOI:10.1364/ol.21.000086

PMID:19865313

Abstract

Detection of CO, N(2)O, and CO(2) in ambient air was performed with a room-temperature cw IR source based on difference-frequency generation in periodically poled LiNbO(3). The source was pumped by a seeded highpower GaAlAs amplif ier at 860 nm and a diode-pumped monolithic Nd:YAG ring laser at 1064 nm. The IR output was tunable between 2160 and 2320 cm(-1) without crystal rotation. The CO detection sensitivity is extrapolated to 5 ppb m/ radicalHz if limited by IR intensity noise.

摘要

基于周期性极化铌酸锂中的差频产生，利用室温连续波红外源对环境空气中的一氧化碳（CO）、一氧化二氮（N₂O）和二氧化碳（CO₂）进行检测。该源由一台860nm的种子注入高功率砷化镓铝放大器和一台1064nm的二极管泵浦单块钕：钇铝石榴石环形激光器泵浦。红外输出在2160至2320cm⁻¹之间可调，无需晶体旋转。如果受红外强度噪声限制，一氧化碳检测灵敏度外推至5ppb m/√Hz。