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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 1, Iss. 2 — Jun. 1, 2011
  • pp: 223–233

Resonant in-band pumping of cryo-cooled Er3+:YAG laser at 1532, 1534 and 1546 nm: a comparative study

Nikolay Ter-Gabrielyan, Viktor Fromzel, Larry D. Merkle, and Mark Dubinskii  »View Author Affiliations

Optical Materials Express, Vol. 1, Issue 2, pp. 223-233 (2011)

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Spectroscopic features of Er:YAG at cryogenic temperatures are studied in detail. We report that the major absorption line at ~1532.3 nm is much narrower and much stronger than previously measured. Spectroscopic analysis suggests that its impact on the laser performance is limited because of the strong pump saturation effect. It is shown that the high efficiency of the laser is, in fact, achieved due to absorption in the wing of this line, which is comprised of a few other transitions. It is also shown that pumping into the relatively weak 1534 nm absorption line provides practically the same laser efficiency (~75%) as pumping into the major 1532 nm absorption line. This is explained by a numerical laser model which takes into account saturation effects of pump and laser intensities. The model is validated by experimental data.

© 2011 OSA

OCIS Codes
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Laser Materials

Original Manuscript: April 1, 2011
Revised Manuscript: May 13, 2011
Manuscript Accepted: May 16, 2011
Published: May 18, 2011

Virtual Issues
Advances in Optical Materials (2011) Optical Materials Express

Nikolay Ter-Gabrielyan, Viktor Fromzel, Larry D. Merkle, and Mark Dubinskii, "Resonant in-band pumping of cryo-cooled Er3+:YAG laser at 1532, 1534 and 1546 nm: a comparative study," Opt. Mater. Express 1, 223-233 (2011)

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