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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 11 — Jun. 1, 2007
  • pp: 1450–1452

Limitations of the tunability of dual-crystal optical parametric oscillators

Ingo Breunig, Rosita Sowade, and Karsten Buse  »View Author Affiliations

Optics Letters, Vol. 32, Issue 11, pp. 1450-1452 (2007)

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We demonstrate what is believed to be the first continuous-wave dual-crystal optical parametric oscillator (D-OPO) for generation of waves with a frequency difference of some terahertz. It is based on two magnesium-doped periodically poled lithium niobate crystals pumped with near-infrared light at 1030 nm . By changing the temperature difference of the crystals we achieve a difference-frequency tuning. This ranges from an initially unexpected lower threshold of 1.3 THz up to higher frequencies. The linewidth of the considered signal waves is smaller than 5 GHz . Smaller difference frequencies were not achievable. Our model, describing the dual-crystal parametric gain, explains the observed lower tuning limit by showing that the assumption of independent oscillation conditions in a D-OPO is not necessarily valid.

© 2007 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(230.4320) Optical devices : Nonlinear optical devices
(260.3090) Physical optics : Infrared, far

ToC Category:
Nonlinear Optics

Original Manuscript: January 26, 2007
Revised Manuscript: March 22, 2007
Manuscript Accepted: March 23, 2007
Published: May 1, 2007

Ingo Breunig, Rosita Sowade, and Karsten Buse, "Limitations of the tunability of dual-crystal optical parametric oscillators," Opt. Lett. 32, 1450-1452 (2007)

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