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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea

| PUBLISHED BY THE OPTICAL SOCIETY OF KOREA

  • Vol. 17, Iss. 2 — Apr. 1, 2013
  • pp: 177–181

Power-Scalable, Sub-Nanosecond Mode-Locked Erbium-Doped Fiber Laser Based on a Frequency-Shifted-Feedback Ring Cavity Incorporating a Narrow Bandpass Filter

Luis Alonso Vazquez-Zuniga and Yoonchan Jeong  »View Author Affiliations


Journal of the Optical Society of Korea, Vol. 17, Issue 2, pp. 177-181 (2013)


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Abstract

We present an all-fiberized power-scalable, sub-nanosecond mode-locked laser based on a frequency-shifted-feedback ring cavity comprised of an erbium-doped fiber, a downshifting acousto-optic modulator (AOM), and a bandpass filter (BPF). With the aid of the frequency-shifted feedback mechanism provided by the AOM and the narrow filter bandwidth of 0.45 nm, we generate self-starting, mode-locked optical pulses with a spectral bandwidth of ~0.098 nm and a pulsewidth of 432 to 536 ps. In particular, the output power is readily scalable with pump power while keeping the temporal shape and spectral bandwidth. This is obtained via the consolidation of bound pulse modes circulating at the fundamental repetition rate of the cavity. In fact, the consolidated pulses form a single-entity envelope of asymmetric Gaussian shape where no discrete internal pulses are perceived. This result highlights that the inclusion of the narrow BPF into the cavity is crucial to achieving the consolidated pulses.

© 2013 Optical Society of Korea

OCIS Codes
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4050) Lasers and laser optics : Mode-locked lasers
(320.5550) Ultrafast optics : Pulses

History
Original Manuscript: March 8, 2013
Revised Manuscript: March 18, 2013
Manuscript Accepted: March 18, 2013
Published: April 25, 2013

Citation
Luis Alonso Vazquez-Zuniga and Yoonchan Jeong, "Power-Scalable, Sub-Nanosecond Mode-Locked Erbium-Doped Fiber Laser Based on a Frequency-Shifted-Feedback Ring Cavity Incorporating a Narrow Bandpass Filter," J. Opt. Soc. Korea 17, 177-181 (2013)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-17-2-177


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