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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 36 — Dec. 20, 1999
  • pp: 7382–7385

Efficient pumping scheme for neodymium-doped materials by direct excitation of the upper lasing level

Raphael Lavi, Steven Jackel, Yitshak Tzuk, Michael Winik, Eyal Lebiush, Mordechai Katz, and Idan Paiss  »View Author Affiliations


Applied Optics, Vol. 38, Issue 36, pp. 7382-7385 (1999)
http://dx.doi.org/10.1364/AO.38.007382


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Abstract

An efficient pumping scheme that involves direct excitation of the upper lasing level of the Nd3+ ion is demonstrated experimentally. The results obtained for direct upper laser level pumping of Nd:YAG R2 (869 nm) and Nd:YVO4 (880 nm) were compared with traditional ∼808-nm pump band excitation. A tunable cw Ti:sapphire laser was used as the pump source. In Nd:YAG, the oscillator slope efficiency increased by 10% and the threshold decreased by 11%. In Nd:YVO4, the slope efficiency increased by 5% and the threshold decreased by 11%. These results agree with theory. The increase in optical efficiency indicates that laser material thermal loading can be substantially reduced.

© 1999 Optical Society of America

OCIS Codes
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.5560) Lasers and laser optics : Pumping

History
Original Manuscript: May 24, 1999
Revised Manuscript: September 16, 1999
Published: December 20, 1999

Citation
Raphael Lavi, Steven Jackel, Yitshak Tzuk, Michael Winik, Eyal Lebiush, Mordechai Katz, and Idan Paiss, "Efficient pumping scheme for neodymium-doped materials by direct excitation of the upper lasing level," Appl. Opt. 38, 7382-7385 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-36-7382


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References

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