摘要
水汽吸收特性的研究对评估激光通讯和激光传输等具有重要的意义,因此水汽吸收光谱的研究在理论和工程方面都有重要应用。用工作在室温下,窄线宽、宽调谐范围分布反馈(DFB)二极管激光器作光源,结合光程可调、最长光程为1097 m、可控温的改进型千米级怀特(White)池,精确地测量了水汽在 1.315μm附近的高分辨力、高灵敏度吸收光谱,得到了水汽分子1.315μm附近31条主要吸收线的位置、谱线强度、压力自加宽系数等参量,测量结果与HITRAN数据库中的值很好地一致。实验中使用先进的电子技术和计算机控制技术,大大提高了实验的效率,确保了实验结果的可靠性。
The study of absorption property of water vapor is valuable for laser communication and transmission of laser. The study of spectra of water vapor is important to theoretical and engineering utility. The high-resolution absorption spectra of water vapor near 1.315 μm wavelength were recorded accurately using a DFB (distributed-feedback) diode laser operating at 1.315 μm and a White type multi-pass cell. The diode laser has narrow line width and wide tune range. Total optical length in the multi-pass cell can be varied in a wide range, the maximum optical length is 1097 nm. Using the recorded spectra, line shape parameters of some water vapor re-vibrational overtones near 1.315 μm were measured at room temperature, line strengths, line positions and self-broadening coefficients were obtained. The measured data agree well with that in the HITRAN database. Advanced electronic technology and computer control technology were used in experiment which improved the efficiency greatly and assured the reliability of the measured data.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2005年第2期256-260,共5页
Acta Optica Sinica
基金
国家863计划(2002AA825100)激光技术领域资助课题。
关键词
光谱学
高分辨力吸收光谱
水汽
怀特池
二极管激光器
Absorption
Light propagation
Optical resolving power
Semiconductor lasers
Vapors
Water
