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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 29, Iss. 13 — Jul. 1, 2004
  • pp: 1503–1505

Single-frequency thulium-doped distributed-feedback fiber laser

Søren Agger, Jørn Hedegaard Povlsen, and Poul Varming  »View Author Affiliations


Optics Letters, Vol. 29, Issue 13, pp. 1503-1505 (2004)
http://dx.doi.org/10.1364/OL.29.001503


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Abstract

We have successfully demonstrated a single-frequency distributed-feedback (DFB) thulium-doped silica fiber laser emitting at a wavelength of 1735 nm. The laser cavity is less than 5 cm long and is formed by intracore UV-written Bragg gratings with a phase shift. The laser is pumped at 790 nm from a Ti:sapphire laser and has a threshold pump power of 59 mW. The laser has a maximum output power of 1 mW in a single-frequency, single-polarization radiation mode and is tunable over a few nanometers. To the best of the authors' knowledge, this is the first report of a single-frequency DFB fiber laser that uses thulium as the amplifying medium. The lasing wavelength is the longest demonstrated with DFB fiber lasers and yet is among the shortest obtained for thulium-doped silica fiber lasers.

© 2004 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3510) Lasers and laser optics : Lasers, fiber

Citation
Søren Agger, Jørn Hedegaard Povlsen, and Poul Varming, "Single-frequency thulium-doped distributed-feedback fiber laser," Opt. Lett. 29, 1503-1505 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-13-1503

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