Sinusoidal phase-modulating laser diode interferometer using photothermal modulation

Takamasa Suzuki; Mineki Matsuda; Osami Sasaki; Takeo Maruyama

doi:10.1117/12.347774

7 May 1999 Sinusoidal phase-modulating laser diode interferometer using photothermal modulation

Takamasa Suzuki, Mineki Matsuda, Osami Sasaki, Takeo Maruyama

Proceedings Volume 3740, Optical Engineering for Sensing and Nanotechnology (ICOSN '99); (1999) https://doi.org/10.1117/12.347774
Event: Optical Engineering for Sensing and Nanotechnology (ICOSN '99), 1999, Yokohama, Japan

Abstract

A laser diode interferometer that uses accurate photo-thermal modulating technique is proposed. Since this technique of photo-thermal method modulates just a wavelength of the laser diode, measurement accuracy is not affected by an intensity modulation that is used to be appeared in the current modulation. The fundamental characteristics of this technique is investigated in detail. The new setup is tested, and its accuracy compared with that of an earlier system.

Citation Download Citation

Takamasa Suzuki, Mineki Matsuda, Osami Sasaki, and Takeo Maruyama "Sinusoidal phase-modulating laser diode interferometer using photothermal modulation", Proc. SPIE 3740, Optical Engineering for Sensing and Nanotechnology (ICOSN '99), (7 May 1999); https://doi.org/10.1117/12.347774

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