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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 9 — Mar. 20, 1999
  • pp: 1798–1801

Mid-infrared (5–12-µm) and limited (5.5–8.5-µm) single-knob tuning generated by difference-frequency mixing in single-crystal AgGaS2

Sajjad Haidar, Koichiro Nakamura, Eiji Niwa, Katashi Masumoto, and Hiromasa Ito  »View Author Affiliations


Applied Optics, Vol. 38, Issue 9, pp. 1798-1801 (1999)
http://dx.doi.org/10.1364/AO.38.001798


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Abstract

We describe tunable 5–12-µm mid-infrared generation in single-crystal silver gallium sulfide (AgGaS2), from nonlinear optical difference-frequency generation. Signal and idler waves obtained from a Nd:YAG laser–pumped LiNbO3 optical parametric oscillator (OPO) were mixed in AgGaS2 crystal to yield difference-frequency waves. For the efficient generation of difference frequency, an unstable resonator was employed as the OPO to reduce output beam divergence. A maximum difference-frequency power of 95 µJ/pulse was obtained near 7.5 µm for a 1-cm-long AgGaS2 crystal. Spectral noncritical phase matching within a specific tuning range was also investigated that permitted limited single-knob tuning (5.5–8.5 µm) of the difference-frequency generator.

© 1999 Optical Society of America

OCIS Codes
(140.3410) Lasers and laser optics : Laser resonators
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

History
Original Manuscript: October 6, 1998
Revised Manuscript: December 7, 1998
Published: March 20, 1999

Citation
Sajjad Haidar, Koichiro Nakamura, Eiji Niwa, Katashi Masumoto, and Hiromasa Ito, "Mid-infrared (5–12-µm) and limited (5.5–8.5-µm) single-knob tuning generated by difference-frequency mixing in single-crystal AgGaS2," Appl. Opt. 38, 1798-1801 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-9-1798

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