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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 28, Iss. 2 — Feb. 1, 2011
  • pp: 288–292

Bidirectionally pumped Cr 4 + :YAG crystal fiber light source for optical coherence tomography

Kuang-Yu Hsu, Dong-Yo Jheng, Mu-Han Yang, Yen-Sheng Lin, Kuang-Yao Huang, Yi-Han Liao, and Sheng-Lung Huang  »View Author Affiliations

JOSA B, Vol. 28, Issue 2, pp. 288-292 (2011)

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A broadband Cr 4 + :YAG double-clad crystal fiber light source with a collimated output power of 3.15 mW was demonstrated by using a bidirectional pump scheme. The bidirectional pump scheme increased the pumping efficiency and reduced the thermal problem along the fiber. Good agreement on the output power of the broadband fluorescence was achieved between experiment and theory, which showed a peak net gain coefficient of 0.03 cm 1 at the center wavelength near 1380 nm . The 3 dB bandwidth of 222 nm with a Gaussian-like spectrum makes it eminently suitable for broadband interferometric technique to have low image cross talk. The calculated interference signal shows a 3 dB width of 3.62 μm with a cross talk smaller than 24 dB for adjacent axial image pixels.

© 2011 Optical Society of America

OCIS Codes
(140.6630) Lasers and laser optics : Superradiance, superfluorescence
(160.3380) Materials : Laser materials
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(230.2285) Optical devices : Fiber devices and optical amplifiers

ToC Category:
Optical Devices

Original Manuscript: July 15, 2010
Revised Manuscript: November 2, 2010
Manuscript Accepted: November 23, 2010
Published: January 26, 2011

Virtual Issues
Vol. 6, Iss. 3 Virtual Journal for Biomedical Optics

Kuang-Yu Hsu, Dong-Yo Jheng, Mu-Han Yang, Yen-Sheng Lin, Kuang-Yao Huang, Yi-Han Liao, and Sheng-Lung Huang, "Bidirectionally pumped Cr4+:YAG crystal fiber light source for optical coherence tomography," J. Opt. Soc. Am. B 28, 288-292 (2011)

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