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Measurement of the wavelength modulation indices with selective reflection spectroscopy
Abstract
The wavelength modulation indices are measured based on harmonic amplitude ratio of 4f_(amp)/6f_(amp) (4f_(amp) and 6f_(amp) are the 4- and 6-th harmonic central peak amplitudes correspondingly) with the Doppler-free selective reflection modulation spectroscopy. The experiments for the 6S_(1/2)(F = 4) → 6P_(3/2)(F' = 5) transition of cesium D_(2) line with 30-MHz linewidth were carried out. The 4f- and 6f-harmonic signals were detected with two digital lock-in amplifiers separately. The maximum error for modulation indices measurement was ±0.1 within the range of m from 3 to 6. The non-linear modulation behaviour of an external cavity diode laser induced by voltage tuning was studied with this method. The method for modulation indices measurement does not require a solid etalon as usual for measuring the wavelength modulation depth and the absorption linewidth correspondingly.
所属栏目：quantum optics
收稿日期：2002-12-31
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Jianming Zhao：State Key Lab of Quantum Optics and Quantum Devices, Department of Electronics &
Wangbao Yin：State Key Lab of Quantum Optics and Quantum Devices, Department of Electronics &
Yanting Zhao：State Key Lab of Quantum Optics and Quantum Devices, Department of Electronics &
Bernard Journet：Information Technology, Shanxi University, Taiyuan 030006
Suotang Jia：State Key Lab of Quantum Optics and Quantum Devices, Department of Electronics &
联系人作者：Liantuan Xiao(journet@satie.ens-cachan.fr)
备注：This work was supported in part by the National Natural Science Foundation of China (Grant No. 10174047, 60078009) and the Natural Science Foundation of Shanxi Province. B. Journet’s e-mail address is journet@satie.ens-cachan.fr. L. Xiao’s e-mail address is xlt@sxu.edu.cn
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引用该论文
Liantuan Xiao, Jianming Zhao, Wangbao Yin, Yanting Zhao, Bernard Journet, Suotang Jia, "Measurement of the wavelength modulation indices with selective reflection spectroscopy," Chinese Optics Letters 1(7), 426-428 (2003)
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