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Applied Optics

Applied Optics


  • Vol. 38, Iss. 34 — Dec. 1, 1999
  • pp: 7069–7075

Laser-diode interferometer with a photothermal modulation

Takamasa Suzuki, Mineki Matsuda, Osami Sasaki, and Takeo Maruyama  »View Author Affiliations

Applied Optics, Vol. 38, Issue 34, pp. 7069-7075 (1999)

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A laser-diode (LD) interferometer that uses an accurate photothermal-modulating technique is proposed. Since this technique with the photothermal method modulates only a wavelength of the LD, measurement accuracy is not affected by an intensity modulation that usually appears in the current modulation. The fundamental characteristics of this technique are investigated in detail. The new setup is tested, and its accuracy is compared with that of a previous system.

© 1999 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(140.2020) Lasers and laser optics : Diode lasers
(140.6810) Lasers and laser optics : Thermal effects

Original Manuscript: May 26, 1999
Revised Manuscript: August 9, 1999
Published: December 1, 1999

Takamasa Suzuki, Mineki Matsuda, Osami Sasaki, and Takeo Maruyama, "Laser-diode interferometer with a photothermal modulation," Appl. Opt. 38, 7069-7075 (1999)

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