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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 2, Iss. 7 — Jul. 1, 2011
  • pp: 2005–2011

Self-starting, self-regulating Fourier domain mode locked fiber laser for OCT imaging

Kartikeya Murari, Jessica Mavadia, Jiefeng Xi, and Xingde Li  »View Author Affiliations


Biomedical Optics Express, Vol. 2, Issue 7, pp. 2005-2011 (2011)
http://dx.doi.org/10.1364/BOE.2.002005


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Abstract

We present a Fourier domain mode locking (FDML) fiber laser with a feedback loop allowing automatic startup without a priori knowledge of the fundamental drive frequency. The feedback can also regulate the drive frequency making the source robust against environmental variations. A control system samples the energy of the light traversing the FDML cavity and uses a voltage controlled oscillator (VCO) to drive the tunable fiber Fabry-Perot filter in order to maximize that energy. We demonstrate a prototype self-starting, self-regulating FDML operating at 40 kHz with a full width tuning range of 140 nm around 1305 nm and a power output of ~40 mW. The laser starts up with no operator intervention in less than 5 seconds and exhibits improved spectral stability over a conventional FDML source. In OCT applications the source achieved over 120 dB detection sensitivity and an ~8.9-µm axial resolution.

© 2011 OSA

OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(140.3600) Lasers and laser optics : Lasers, tunable

ToC Category:
Optical Coherence Tomography

History
Original Manuscript: May 12, 2011
Revised Manuscript: June 16, 2011
Manuscript Accepted: June 16, 2011
Published: June 22, 2011

Citation
Kartikeya Murari, Jessica Mavadia, Jiefeng Xi, and Xingde Li, "Self-starting, self-regulating Fourier domain mode locked fiber laser for OCT imaging," Biomed. Opt. Express 2, 2005-2011 (2011)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-2-7-2005


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References

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