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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 6 — Mar. 15, 2014
  • pp: 1661–1664

High-power frequency comb in the range of 2–2.15  μm based on a holmium fiber amplifier seeded by wavelength-shifted Raman solitons from an erbium-fiber laser

Nicola Coluccelli, Marco Cassinerio, Alessio Gambetta, Paolo Laporta, and Gianluca Galzerano  »View Author Affiliations


Optics Letters, Vol. 39, Issue 6, pp. 1661-1664 (2014)
http://dx.doi.org/10.1364/OL.39.001661


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Abstract

We demonstrate a room-temperature high-power frequency comb source covering the spectral region from 2 to 2.15 μm. The source is based on a femtosecond erbium-fiber laser operating at 1.55 μm with a repetition rate of 250 MHz, wavelength-shifted up to 2.06 μm by the solitonic Raman effect, seeding a large-mode-area holmium (Ho) fiber amplifier pumped by a thulium (Tm) fiber laser emitting at 1.94 μm. The frequency comb has an integrated power of 2 W, with overall power fluctuations as low as 0.3%. The beatnote between the comb and a high-spectral-purity, single-frequency Tm–Ho laser has a linewidth of 32 kHz over 1 ms observation time, with a signal-to-noise ratio in excess of 30 dB.

© 2014 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(320.7090) Ultrafast optics : Ultrafast lasers
(320.7160) Ultrafast optics : Ultrafast technology

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: November 20, 2013
Revised Manuscript: February 12, 2014
Manuscript Accepted: February 12, 2014
Published: March 14, 2014

Citation
Nicola Coluccelli, Marco Cassinerio, Alessio Gambetta, Paolo Laporta, and Gianluca Galzerano, "High-power frequency comb in the range of 2–2.15  μm based on a holmium fiber amplifier seeded by wavelength-shifted Raman solitons from an erbium-fiber laser," Opt. Lett. 39, 1661-1664 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-6-1661

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