基于多模VCSELs的自混频传感器信噪比的热依赖性

2010 Conference on Optoelectronic and Microelectronic Materials and Devices Pub Date : 2010-12-01 DOI:10.1109/COMMAD.2010.5699786

Ranveer Matharu, J. Perchoux, R. Kliese, Y. Lim, A. Rakić

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引用次数: 0

摘要

实验研究了垂直腔面发射激光(VCSEL)传感器自混频信号的信噪比(SNR)随激光驱动电流和环境温度的变化规律。利用VCSEL各横模阈值电流的温度依赖关系模型可以很好地逼近电流-温度空间的最大信噪比。

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Thermal dependence of the signal to noise ratio of self-mixing sensors based on multimode VCSELs

We investigate experimentally the signal-to-noise ratio (SNR) of the self-mixing signal from a Vertical-Cavity Surface-Emitting Laser (VCSEL) based sensor as a function of laser driving current and the ambient temperature. The maximum SNR in the current-temperature space can be well approximated by the model related to the temperature dependence of the threshold current for individual VCSEL transverse modes.

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2010 Conference on Optoelectronic and Microelectronic Materials and Devices

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