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High-speed, high-resolution, and large-scanning-range three-dimensional optical measurement system using a wavelength-tunable orthogonally polarized ultrashort twin pulse source

Source: J. Opt. Soc. Am. B 27, 141 (2010); doi:10.1364/JOSAB.27.000141

Published 2009-11-13

KEYWORDS and PACS
Keywords
PACS
  • 42.62.Eh
    Metrological applications of lasers
  • 07.60.Ly
    Optical interferometers
  • 42.81.Gs
    Optical fiber birefringence, polarization
  • 42.65.Tg
    Optical solitons; nonlinear guided waves
  • 42.81.Dp
    Optical propagation, scattering, and losses in fibers; solitons
  • 42.60.Fc
    Laser beam modulation, tuning, and mode locking
  • YEAR: 2010
PUBLICATION DATA
ISSN:
1553-9601 (online)
Publisher:
AIP is a member of CrossRef OSA
Takefumi Ohta,1 Norihiko Nishizawa,1 Tetsuya Ozawa,2 and Kazuyoshi Itoh1
1Division of Advanced Science and Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
2Department of Electrical Engineering, Miyagi National College of Technology, 48 Nodayama, Medeshima-Shiote, Natori, Miyagi 981-1239, Japan
A high-speed, high-resolution, and large-scanning-range three-dimensional measurement system was demonstrated using an electronically controlled wavelength-tunable orthogonally polarized high-power ultrashort twin pulse source and an all-fiber interferometer. Thanks to the high peak power, the ultrashort optical pulses propagated along a fiber while maintaining the pulse shape by means of the soliton effect, allowing us to demonstrate high-speed, high-resolution, and large-scanning-range measurement. First, the interference was analyzed by numerical calculations and then the measurement system was demonstrated experimentally. A longitudinal scanning range of about 25 mm, a longitudinal resolution of 33 µm, and a scanning speed of 1000 points/s were achieved without moving parts. For a measurement distance of 0.5 m, a sensitivity of 60 dB was obtained. Clear three-dimensional images of a 100 yen Japanese coin and metal samples were obtained using this system. ©2009 Optical Society of America
History: Received 29 September 2009; revised 10 November 2009; accepted 13 November 2009; published 2009-11-13
Permalink: http://dx.doi.org/10.1364/JOSAB.27.000141

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