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Optics Letters

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  • Vol. 19, Iss. 20 — Oct. 15, 1994
  • pp: 1627–1629

1-W average power levels and tunability from a diode-pumped 2.94-μm Er:YAG oscillator

C. E. Hamilton, R. J. Beach, S. B. Sutton, L. H. Furu, and W. F. Krupke  »View Author Affiliations


Optics Letters, Vol. 19, Issue 20, pp. 1627-1629 (1994)
http://dx.doi.org/10.1364/OL.19.001627


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Abstract

A tunable Er:YAG laser, side pumped by a quasi-cw InGaAs diode array, generates > 500 mW of power at 2.936 μm. The cavity is a 4-cm plano-concave resonator that uses total internal reflection on the pump face of the Er:YAG crystal to couple the diode emission into the resonating modes of the oscillator. Tuning is accomplished by angle tuning a 300-μm-thick YAG étalon. The tuning range is 2.933–2.939 μm. Thermal lensing limits the duty factor to 4% or 8%, depending on the Er:YAG crystal thickness (2 or 1 mm). A 2.5-cm-long resonator operates at an 11% duty factor and generates 1.3 W of average power.

© 1994 Optical Society of America

History
Original Manuscript: May 31, 1994
Published: October 15, 1994

Citation
C. E. Hamilton, R. J. Beach, S. B. Sutton, L. H. Furu, and W. F. Krupke, "1-W average power levels and tunability from a diode-pumped 2.94-μm Er:YAG oscillator," Opt. Lett. 19, 1627-1629 (1994)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-19-20-1627


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