Absolute distance measurement with high accuracy using a laser diode

Xiao-Ming Sun; Xifu Qiang; Mao-Hua Zhu

doi:10.1117/12.156266

22 September 1993 Absolute distance measurement with high accuracy using a laser diode

Xiao-Ming Sun, Xifu Qiang, Mao-Hua Zhu

Proceedings Volume 2101, Measurement Technology and Intelligent Instruments; (1993) https://doi.org/10.1117/12.156266
Event: Measurement Technology and Intelligent Instruments, 1993, Wuhan, China

Abstract

In this paper a high accuracy heterodyne interferorneter measuring absolute distance is proposed. The triangular current is applied to the laser diode and frequency shift is performed using Bragg Cell and two-modulation is achieved. A high frequency clock for the phase measurement is employed. The system has high accuracy and high sensitivity.

Citation Download Citation

Xiao-Ming Sun, Xifu Qiang, and Mao-Hua Zhu "Absolute distance measurement with high accuracy using a laser diode", Proc. SPIE 2101, Measurement Technology and Intelligent Instruments, (22 September 1993); https://doi.org/10.1117/12.156266

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