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Optics Letters

Optics Letters


  • Vol. 24, Iss. 17 — Sep. 1, 1999
  • pp: 1233–1235

Efficient nanosecond optical parametric oscillators based on periodically poled KTP emitting in the 1.8–2.5-μm spectral region

J. Hellström, V. Pasiskevicius, F. Laurell, and H. Karlsson  »View Author Affiliations

Optics Letters, Vol. 24, Issue 17, pp. 1233-1235 (1999)

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The use of periodically poled KTiOPO4 as a gain medium in efficient nanosecond optical parametric oscillators pumped by a flash-lamp-pumped Q-switched Nd:YAG laser is demonstrated. Parametric radiation in the 1.8–2.5-μ m spectral region was achieved when the crystal temperature was tuned from 10 to 100°C. A maximum total output energy of 1.8 mJ was obtained at a pump level of 3.5 mJ. Stable operation was achieved, with conversion efficiencies reaching 50%. No gray tracking or laser damage was observed, even for pump intensities of 450MW/cm2.

© 1999 Optical Society of America

OCIS Codes
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

J. Hellström, V. Pasiskevicius, F. Laurell, and H. Karlsson, "Efficient nanosecond optical parametric oscillators based on periodically poled KTP emitting in the 1.8–2.5-μm spectral region," Opt. Lett. 24, 1233-1235 (1999)

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