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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 21 — Jul. 20, 2011
  • pp: 4000–4004

Ultra-high-speed phase-sensitive optical coherence reflectometer with a stretched pulse supercontinuum source

Hoseong Song, Seung Bum Cho, Dong Uk Kim, Sungho Jeong, and Dug Young Kim  »View Author Affiliations

Applied Optics, Vol. 50, Issue 21, pp. 4000-4004 (2011)

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We demonstrate an ultra-high-speed phase-sensitive time-wavelength-domain optical coherence reflectometer with a stretched pulse supercontinuum source. A pulsed fiber laser operating at 10 MHz repetition rate was used to generate a pulsed supercontinuum of 30 ps pulse duration by using a nonlinear optical fiber. The supercontinuum pulses are stretched into 70 ns pulses with a highly dispersive fiber. With this stretched pulse source, we have built a phase-sensitive optical coherence reflectometer that measures the spectral interferogram of reflected light. By using the linear relation between the wavelength and the temporal position in a linearly chirped pulse, ultra-high-speed spectrum measurement can be obtained with this method in the time domain. We have demonstrated ultra-high-speed two-dimensional surface profiling for a standard image target and high-speed single-point monitoring for a fixed point under vibrational motion. It is shown that the measurement speed for the position of a single point can be as fast as 2.5 MHz , while the position accuracy can be better than 4.49 nm .

© 2011 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(180.3170) Microscopy : Interference microscopy

ToC Category:
Imaging Systems

Original Manuscript: April 29, 2011
Manuscript Accepted: June 2, 2011
Published: July 14, 2011

Virtual Issues
Vol. 6, Iss. 8 Virtual Journal for Biomedical Optics

Hoseong Song, Seung Bum Cho, Dong Uk Kim, Sungho Jeong, and Dug Young Kim, "Ultra-high-speed phase-sensitive optical coherence reflectometer with a stretched pulse supercontinuum source," Appl. Opt. 50, 4000-4004 (2011)

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