摘要
本文使用0.82μmAlGaAs激光二极管(LD)观测H_2O分子(0,0,0)—(2,1,1)泛频振动吸收谱,获得822.6～823.2 nm波长范围内H_2O分子26条泛频吸收谱线.其中,检测谱线的最小吸收系数α_(min)～3×10^(-6)cm(-1),对α～1×10^(-4)cm^(-1)谱线所获得的信噪比(SNR)约60.本文还观测了气体压强对泛频谱线形、线宽的影响,测量了泛频谱线的压强增宽系数β_p～0.128MHz/Pa.
26 absorption lines of water vapor in vibration-rotation band have beoen bser-ved by using an AlGaAs diode laser around 822.6-823.2 nm. The minimum absorption coefficient α-3 ×10-6 cm-1 and the SNR-60 (for α-1×10-4 cm-1) have been detected, A pressure broadening coefficient of 0.128 MHz/Pa was measured.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1992年第3期256-260,共5页
Acta Optica Sinica
基金
自然科学基金资助的项目
关键词
泛频振动谱
压强增宽
蒸汽
压强
overtone vibration spectrum, pressure broadening.
