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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 4, Iss. 2 — Feb. 10, 2009

Raman-pumped Fourier-domain mode-locked laser: analysis of operation and application for optical coherence tomography

Thomas Klein, Wolfgang Wieser, Benjamin R. Biedermann, Christoph M. Eigenwillig, Gesa Palte, and Robert Huber  »View Author Affiliations


Optics Letters, Vol. 33, Issue 23, pp. 2815-2817 (2008)
http://dx.doi.org/10.1364/OL.33.002815


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Abstract

We demonstrate a Raman-pumped Fourier-domain mode-locked (FDML) fiber laser and optical coherence tomography imaging with this source. The wavelength sweep range of only 30 nm centered around 1550 nm results in limited axial resolution, hence a nonbiological sample is imaged. An output power of 1.9 mW was achieved at a sweep rate of 66 kHz and a maximum ranging depth of 2.5 cm . Roll-off characteristics are found to be similar to FDML lasers with semiconductor optical amplifiers as gain media. The application of Raman gain also enables unperturbed cavity ring-down experiments in FDML lasers for the first time, providing direct access to the photon lifetime in the laser cavity. Good agreement with nonswept cw operation is proof of the stationary operation of FDML lasers.

© 2008 Optical Society of America

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3550) Lasers and laser optics : Lasers, Raman
(140.3600) Lasers and laser optics : Lasers, tunable
(170.4500) Medical optics and biotechnology : Optical coherence tomography

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: September 30, 2008
Manuscript Accepted: October 21, 2008
Published: November 24, 2008

Virtual Issues
Vol. 4, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Thomas Klein, Wolfgang Wieser, Benjamin R. Biedermann, Christoph M. Eigenwillig, Gesa Palte, and Robert Huber, "Raman-pumped Fourier-domain mode-locked laser: analysis of operation and application for optical coherence tomography," Opt. Lett. 33, 2815-2817 (2008)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-33-23-2815

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