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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 25 — Dec. 3, 2012
  • pp: 27820–27829

Multi-gigahertz frequency comb-based interferometry using frequency-variable supercontinuum generated by optical pulse synthesizer

Samuel Choi, Ken Kasiwagi, Yosuke Kasuya, Shuto Kojima, Tatsutoshi Shioda, and Takashi Kurokawa  »View Author Affiliations


Optics Express, Vol. 20, Issue 25, pp. 27820-27829 (2012)
http://dx.doi.org/10.1364/OE.20.027820


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Abstract

A multi-gigahertz frequency comb (MGFC)-based interferometer was developed for profilometry and tomography using a frequency variable supercontinuum (SC). The comparatively flattened and broadened SC light source with variable multi-gigahertz interval frequency was developed using an optical pulse synthesizer and highly nonlinear dispersion flattened fiber. The generated SC provided a stable interference output with a full width half maximum of 19 μm during interval frequency sweeping of over 400 MHz. We experimentally confirmed that the interference signal exhibited an envelope-only waveform without fringes, which enabled the drastic reduction of the sampling points resulting in high speed measurement. A full-field 3-D image with 320 × 256 × 300 pixels was acquired with a measurement time of only 10 seconds. It was demonstrated that the MGFC-based interferometer with the novel SC light source has the potential for application in a high speed full-field 3-D metrology.

© 2012 OSA

OCIS Codes
(110.6960) Imaging systems : Tomography
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: September 27, 2012
Revised Manuscript: November 16, 2012
Manuscript Accepted: November 19, 2012
Published: November 29, 2012

Citation
Samuel Choi, Ken Kasiwagi, Yosuke Kasuya, Shuto Kojima, Tatsutoshi Shioda, and Takashi Kurokawa, "Multi-gigahertz frequency comb-based interferometry using frequency-variable supercontinuum generated by optical pulse synthesizer," Opt. Express 20, 27820-27829 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-25-27820


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