Acta Optica Sinica, Volume. 21, Issue 3, 317(2001)
Theoretical and Experimental Investigation of Low-Frequency Wavelength Modulation Spectroscpy
A series of experiments are carried out by modulating piezo voltage of an external-cavity continuously tunalbe diode laser. Cesium atom D2 line (6S1/2→6P3/2) absorption spectrum is measured by harmonic detection with a lock-in amplifier. The results about various harmonic signals in experiment are agreement with that in theory. The high-order harmonic detection may result in a significant improvement in signal-to-noise-ratio (SNR).
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Theoretical and Experimental Investigation of Low-Frequency Wavelength Modulation Spectroscpy[J]. Acta Optica Sinica, 2001, 21(3): 317