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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 15 — Aug. 1, 2008
  • pp: 1741–1743

High-speed polygon-scanner-based wavelength- swept laser source in the telescope-less configurations with application in optical coherence tomography

S. M. R. Motaghian Nezam  »View Author Affiliations


Optics Letters, Vol. 33, Issue 15, pp. 1741-1743 (2008)
http://dx.doi.org/10.1364/OL.33.001741


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Abstract

A compact high-speed tuning laser source is demonstrated in two different configurations using a polygonal mirror scanner without a telescope. It is shown that the filter configuration finesse increases by utilizing multiple reflections from the polygon facet(s) and grating illumination(s). Theoretically, the free spectral range (FSR), the instantaneous linewidth, and the finesse of each filter configuration are derived. For single grating illumination, the measured coherence length, FSR, and power were 2.8 mm , 184 nm , and 40 mW at the scanning frequency of 50 kHz , respectively. Coherence length, FSR, and power of the second laser configuration were 6.2 mm , 117 nm , and 35 mW , respectively. Finally, images of a human finger were acquired in vivo using two proposed swept-source configurations.

© 2008 Optical Society of America

OCIS Codes
(110.1650) Imaging systems : Coherence imaging
(110.4500) Imaging systems : Optical coherence tomography
(170.3880) Medical optics and biotechnology : Medical and biological imaging

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: March 17, 2008
Revised Manuscript: June 30, 2008
Manuscript Accepted: June 30, 2008
Published: July 29, 2008

Virtual Issues
Vol. 3, Iss. 9 Virtual Journal for Biomedical Optics

Citation
S. M. R. Motaghian Nezam, "High-speed polygon-scanner-based wavelength-swept laser source in the telescope-less configurations with application in optical coherence tomography," Opt. Lett. 33, 1741-1743 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-15-1741

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