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Proceedings Paper

Sinusoidal phase-modulating laser diode interferometer using photothermal modulation
Author(s): Takamasa Suzuki; Mineki Matsuda; Osami Sasaki; Takeo Maruyama
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Paper 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.

Paper Details

Date Published: 7 May 1999
PDF: 4 pages
Proc. SPIE 3740, Optical Engineering for Sensing and Nanotechnology (ICOSN '99), (7 May 1999); doi: 10.1117/12.347774
Show Author Affiliations
Takamasa Suzuki, Niigata Univ. (Japan)
Mineki Matsuda, Niigata Univ. (Japan)
Osami Sasaki, Niigata Univ. (Japan)
Takeo Maruyama, Niigata Univ. (Japan)


Published in SPIE Proceedings Vol. 3740:
Optical Engineering for Sensing and Nanotechnology (ICOSN '99)

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