光学学报, 1999, 19 (11): 1504, 网络出版: 2006-08-09  

光外差-塞曼调制磁旋转光谱技术的线型研究

Line Shape Analysis of Optical Heterodyne Zeeman Modulation Magnetic Rotation Spectroscopy
作者单位
华东师范大学物理系,华东师范大学量子光学开放研究实验室,上海200062
摘要
光外差-塞曼调制磁旋转光谱技术是一种高灵敏的吸收光谱技术。它同时对激光频率和样品的塞曼效应进行调制,然后通过双解调来提取微弱的光谱信号。文内导出了该信号的数学表达式,并对影响线型和灵敏度的多种物理参数进行了分析,获得了与实验相符合的结果。
Abstract
Optical heterodyne Zeeman modulation magnetic rotation spectroscopy (OHZM-MRS) is a high sensitive spectroscopy technique. In this spectroscopy, both laser frequency and Zeeman effect of a sample are modulated, and then the signal with high signal-to-noise will be obtained by double demodulation. The expression of OHZM-MRS signal is derived, and the influences on the line shape of OHZM-MRS are discussed by the extinction coefficient of polarizers, ellipticity, phase shift induced by elliptical polarization, φ angle (where φ is the small uncrossing angle between two nearly crossed polarizers) and residual amplitude modulation. The results of theory and experiment are in agreement each other.
参考文献

[1] Buckingham A D, Stephens P J. Magnetic optical activity, Ann. Rev. Phys. Chem., 1966, 17:399~432

[2] Litfin G, Pollock C R, Curl Jr. R F et al.. Sensitivity enhancement of laser absorption spectroscopy by magnetic rotation effect. J. Chem. Phys., 1980, 72(12):6602~6605

[3] Hugo Wahlqhisl. Modulation broadening of unsaturated Lorentzian lines. J. Chem. Phys., 1961, 35(5):1708~1710

[4] Smith R L. Practical solutions of the Lock-in detection problem for Lorentz and dispersion resonance signals. J. Opt. Soc. Am., 1971, 61(8):1015~1022

[5] Bjorklund G C. Frequency-modulation spectroscopy: A new method for measuring weak absorptions and dispersions. Opt. Lett., 1980, 5(1):15~17

[6] Bjorklund G C, Levenson M D. Sub-Doppler frequency-modulation spectroscopy of I2. Phys. Rev. (A), 1981, 24(1):166~169

[7] Hall J L, Hollberg L, Baer T et al.. Optical heterodyne saturation spectroscopy. Appl. Phys. Lett., 1981, 39(9):680~682

[8] Argawal G S. Frequency-modulated spectra of coherently driven systems. Phys. Rev. (A), 1981, 23(3):1375~1381

[9] Schenzle A, Devoe R G, Rewer R G. Phase-modulation laser spectroscopy. Phys. Rev. (A), 1982, 25(5):2606~2621

[10] Bjorklund G C, Levenson M D, Lenth W et al.. Frequency modulation (FM) spectroscopy: Theory of lineshapes and signal-to-noise anslysis. Appl. Phys. (B), 1983, 32(1):145~152

[11] North S W, Zheng X S, Fei Rui et al.. Line shape analysis of Doppler broadened frequency -modulated spectra. J. Chem. Phys., 1996, 104(6):2129~2135

[12] MeCarthy M C, Block J C, Field R W. Frequency-modulation enhanced magnetic rotation spectroscopy: A sensitive and selective absorption scheme for paramagnetic molecules. J. Chem. Phys., 1994, 100(9):6331~6346

[13] 陈扬, 毕志毅, 马龙生等. 光外差-塞曼调制磁旋转光谱技术. 科学通报, 1999, 44(2):156~159

[14] 王 辉, 蔡佩佩, 夏长平等. N2第一正带的塞曼调制磁旋转光谱分析. 化学物理学报, 1997, 10(2):117~123

王荣军, 毕志毅, 陈扬骎, 卢晶晶, 蔡佩佩, 杨晓华, 马龙生. 光外差-塞曼调制磁旋转光谱技术的线型研究[J]. 光学学报, 1999, 19(11): 1504. 王荣军, 毕志毅, 陈扬骎, 卢晶晶, 蔡佩佩, 杨晓华, 马龙生. Line Shape Analysis of Optical Heterodyne Zeeman Modulation Magnetic Rotation Spectroscopy[J]. Acta Optica Sinica, 1999, 19(11): 1504.

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