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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 32, Iss. 21 — Jul. 20, 1993
  • pp: 3930–3941

Maximizing output power of a low-gain laser system

D. L. Carroll and L H. Sentman  »View Author Affiliations


Applied Optics, Vol. 32, Issue 21, pp. 3930-3941 (1993)
http://dx.doi.org/10.1364/AO.32.003930


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Abstract

Rigrod theory was used to model outcoupled power from a low-gain laser with good accuracy. For a low-gain overtone cw HF chemical laser, Rigrod theory shows that a higher medium saturation yields a higher overall overtone efficiency, but does not necessarily yield a higher measurable power (power in the bucket). For low-absorption–scattering loss overtone mirrors and a 5% penalty in outcoupled power, the intracavity flux and hence the mirror loading may be reduced by more than a factor of 2 when the gain length is long enough to saturate the medium well. For the University of Illinois at Urbana-Champaign overtone laser that has an extensive database with well-characterized mirrors for which the Rigrod parameters g0 and Isat were firmly established, the accuracy to which the reflectivities of high-reflectivity overtone mirrors can be deduced by using measured mirror transmissivities, measured outcoupled power, and Rigrod theory is approximatly ±0.07%. This method of accurately deducing mirror reflectivities may be applicable to other low-gain laser systems that use high-reflectivity mirrors at different wavelengths. The maximum overtone efficiency is estimated to be approximately 80%–100%.

© 1993 Optical Society of America

History
Original Manuscript: May 18, 1992
Published: July 20, 1993

Citation
D. L. Carroll and L H. Sentman, "Maximizing output power of a low-gain laser system," Appl. Opt. 32, 3930-3941 (1993)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-32-21-3930


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References

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