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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 7 — Apr. 1, 2008
  • pp: 669–671

Nd:YAG laser pumped at 946 nm

Sharone Goldring and Raphael Lavi  »View Author Affiliations


Optics Letters, Vol. 33, Issue 7, pp. 669-671 (2008)
http://dx.doi.org/10.1364/OL.33.000669


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Abstract

A Nd:YAG laser crystal was pumped at 946 nm and lased at 1064 nm . This pump–lase format was investigated in order to reduce the quantum defect between the pump and laser photons as compared to other pump schemes of this material. To the best of our knowledge, this is the first realization of this scheme. A room temperature absorption coefficient and linewidth of 0.075 cm 1 and 1 nm for 1% at. Nd + 3 concentrations were measured for the 946 nm absorption line. Those parameters impose both narrow-bandwidth pumping and a long absorption path. By increasing the laser crystal temperature above room temperature, the absorption cross sections at 946 and 938 nm increase due to enhanced thermal population of the upper energy level of the ground manifold. The possibility of exploiting this phenomenon to enhance the pump absorption is also discussed.

© 2008 Optical Society of America

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 4, 2007
Revised Manuscript: February 18, 2008
Manuscript Accepted: February 19, 2008
Published: March 26, 2008

Citation
Sharone Goldring and Raphael Lavi, "Nd:YAG laser pumped at 946 nm," Opt. Lett. 33, 669-671 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-7-669

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