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Updated: Aug 19, 2026
Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
Published on: April 24, 2014
Effect of external cavity length on self-mixing signals in a multilongitudinal-mode Fabry-Perot laser diode
Liang Lv1, Huaqiao Gui, Jianping Xie
1Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China. lvliang@mail.ustc.edu.cn
Abstract:
The effect of external-cavity length on self-mixing signals in a multilongitudinal-mode Fabry-Perot laser diode (FP-LD) was investigated experimentally. It has been shown that the output waveforms of self-mixing signals vary periodically when the length of the external cavity changes. This result agrees well with our theoretical calculations for the self-mixing effect of two adjacent longitudinal modes in a FP-LD. Moreover, the time-averaged output intensities of self-mixing signals has also been measured and compared with theoretical analysis.
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