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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 4 — Feb. 15, 2013
  • pp: 504–506

In-band pumped Ho3+:KY3F10 2 μm laser

Martin Schellhorn, Daniela Parisi, Stefano Veronesi, Giacomo Bolognesi, Marc Eichhorn, and Mauro Tonelli  »View Author Affiliations

Optics Letters, Vol. 38, Issue 4, pp. 504-506 (2013)

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We report the first observation to our knowledge of room-temperature continuous-wave laser operation on the I75I85 transition of Ho3+ ions in a KY3F10 single crystal. Using a Tm-doped silica fiber laser operating at 1938 nm as a pump source, a maximum laser power of 1.8 W was obtained at a wavelength of 2040nm for 27 W of absorbed pump power with a slope efficiency of 19.1% with respect to absorbed power. At low cavity output coupling, the lasing wavelength shifted to 2060.5 nm. The beam propagation factor (M2) was measured to be <1.06 at the maximum output power, confirming fundamental transverse-mode (TEM00) operation. Performing a Caird analysis, we determined resonator round-trip losses and intrinsic slope efficiency of 30% and 43.8%, respectively.

© 2013 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Lasers and Laser Optics

Original Manuscript: October 5, 2012
Revised Manuscript: January 9, 2013
Manuscript Accepted: January 9, 2013
Published: February 12, 2013

Martin Schellhorn, Daniela Parisi, Stefano Veronesi, Giacomo Bolognesi, Marc Eichhorn, and Mauro Tonelli, "In-band pumped Ho3+:KY3F10 2 μm laser," Opt. Lett. 38, 504-506 (2013)

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