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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 18 — Jun. 20, 2012
  • pp: 4109–4112

Phase-shifting laser diode interferometer using pulse modulation

Takamasa Suzuki, Tsubasa Adachi, Osami Sasaki, and Samuel Choi  »View Author Affiliations

Applied Optics, Vol. 51, Issue 18, pp. 4109-4112 (2012)

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A phase-shifting laser diode interferometer that uses direct pulse modulation is proposed and demonstrated. We found that a laser beam with a wide range of wavelength variation at constant optical power could be generated when a pulsed current was injected into the laser diode. We constructed a highly accurate interferometer by using a pair of interferometers. Several experiments, such as observations of temporal interference signals and spatial interferograms, measurement of a concave mirror, and duplicate measurements, confirmed the characteristics of pulse modulation and demonstrated the effectiveness of our technique.

© 2012 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(140.2020) Lasers and laser optics : Diode lasers
(140.3538) Lasers and laser optics : Lasers, pulsed

ToC Category:
Lasers and Laser Optics

Original Manuscript: March 14, 2012
Revised Manuscript: May 3, 2012
Manuscript Accepted: May 7, 2012
Published: June 14, 2012

Takamasa Suzuki, Tsubasa Adachi, Osami Sasaki, and Samuel Choi, "Phase-shifting laser diode interferometer using pulse modulation," Appl. Opt. 51, 4109-4112 (2012)

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