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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 21 — Jul. 20, 2002
  • pp: 4318–4324

Direct measurement of the group refractive index of air with interferometry between adjacent femtosecond pulses

Yoshihisa Yamaoka, Kaoru Minoshima, and Hirokazu Matsumoto  »View Author Affiliations


Applied Optics, Vol. 41, Issue 21, pp. 4318-4324 (2002)
http://dx.doi.org/10.1364/AO.41.004318


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Abstract

The group refractive index of air in laboratory conditions is measured directly between adjacent femtosecond laser pulses by a new interferometry technique. Measurement of the repetition rate of the mode-locked pulse train that gives the maximum amplitude of the interference-signal envelope enables us to determine the group refractive index of air within a standard deviation of 2 × 10-7. This simple method without vacuum reference is attractive for measuring the group refractive index needed for precise distance measurements in open fields.

© 2002 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.4530) Instrumentation, measurement, and metrology : Optical constants
(140.4050) Lasers and laser optics : Mode-locked lasers
(280.3400) Remote sensing and sensors : Laser range finder
(320.7090) Ultrafast optics : Ultrafast lasers
(320.7100) Ultrafast optics : Ultrafast measurements

History
Original Manuscript: October 30, 2001
Revised Manuscript: April 10, 2002
Published: July 20, 2002

Citation
Yoshihisa Yamaoka, Kaoru Minoshima, and Hirokazu Matsumoto, "Direct measurement of the group refractive index of air with interferometry between adjacent femtosecond pulses," Appl. Opt. 41, 4318-4324 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-21-4318

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