用时间分辨傅里叶变换光谱法观察到Cr2 +：ZnSe laser腔内吸收的2.5 $μ$ m处的乙炔弱带
Acetylene weak bands at 2.5 $μ$m from intracavity Cr2+:ZnSe laser absorption observed with time-resolved Fourier transform spectroscopy
摘要：
利用步进模式高分辨时间分辨傅里叶变换干涉仪分析了在低压乙炔真空密封腔中的中红外多模Cr^2+：ZnSe激光器的光谱动力学特性。在4000 cm^-1附近记录到天然同位素丰度的C_2H_2的多普勒限制吸收光谱，其千米吸收路径长度和灵敏度优于3 × 10^-8 cm-1。新发现的两个冷带分别对应于^12C^13CH_2的n_1+n_4^1和n_3+n_5^1跃迁。观察到^12C_2HD的n_1+n_5^1谱带和14条^12C_2H_2谱带，其中n_2+2n_4^2+n_5^-1谱带为首次发现。
英文摘要：
The spectral dynamics of a mid-infrared multimode Cr^2+:ZnSe laser located in a vacuum sealed chamber containing acetylene at low pressure is analyzed by a stepping-mode high-resolution time-resolved Fourier transform interferometer. Doppler-limited absorption spectra of C_2H_2 in natural isotopic abundance are recorded around 4000 cm^-1 with kilometric absorption path lengths and sensitivities better than 3 10^-8 cm-1. Two cold bands are newly identified and assigned to the n_1+n_4^1 and n_3+n_5^1 transitions of ^12C^13CH_2. The n_1+n_5^1 band of ^12C_2HD and fourteen ^12C_2H_2 bands are observed, among which for the first time n_2+2n_4^2+n_5^-1.
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