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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 36 — Dec. 20, 1998
  • pp: 8406–8419

Modeling of Tm, Ho:YAG and Tm, Ho:YLF 2- μm Lasers and Calculation of Extractable Energies

Didier Bruneau, Stéphane Delmonte, and Jacques Pelon  »View Author Affiliations


Applied Optics, Vol. 37, Issue 36, pp. 8406-8419 (1998)
http://dx.doi.org/10.1364/AO.37.008406


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Abstract

The development of a model for 2-μm laser operation in Tm, Ho:YAG and YLF crystals pumped in the near infrared is reported. This model, based on a simplified spectroscopic scheme, is fitted to a set of characterization experiments by means of three adjustable parameters. Results show that the excited-state populations are predicted with a relative accuracy of approximately 10% for a large range of pump levels. Using this model, we calculate the extractable energy on short-laser-pulse interactions for the two materials under different operation conditions. We study the sensitivity to pump duration and the optimization of dopant concentrations. We investigate the improvement of the extractable-energy efficiency with multiple-pulse operation. For double-pulse operation the improvement is approximately a factor of 1.5 and leads to overall extractable-energy efficiencies of 16% in YAG and 15% in YLF for an absorbed pump energy of 10 J cm<sup>−3</sup>.

© 1998 Optical Society of America

OCIS Codes
(010.3640) Atmospheric and oceanic optics : Lidar
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3580) Lasers and laser optics : Lasers, solid-state
(160.5690) Materials : Rare-earth-doped materials

Citation
Didier Bruneau, Stéphane Delmonte, and Jacques Pelon, "Modeling of Tm, Ho:YAG and Tm, Ho:YLF 2- μm Lasers and Calculation of Extractable Energies," Appl. Opt. 37, 8406-8419 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-36-8406

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