20 September 2002 Laser diode interferometers equipped with an electrical feedback loop
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The tunability of the laser diode's operative wavelength is very attractive to realize active interferometer. We review here, a system that possesses this important capability, by virtue of its built-in electrical feedback loop. After describing the basic principles of its phase-control and feedback-signal generation, some selected examples of its implementation, such as displacement-, profile- and distance-measurements, as well as disturbance elimination are presented.
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Takamasa Suzuki, Osami Sasaki, "Laser diode interferometers equipped with an electrical feedback loop", Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); doi: 10.1117/12.465656; https://doi.org/10.1117/12.465656

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