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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 23, Iss. 16 — Aug. 15, 1998
  • pp: 1262–1264

Coupled tandem optical parametric oscillator (OPO): an OPO within an OPO

P. B. Phua, K. S. Lai, R. F. Wu, and T. C. Chong  »View Author Affiliations


Optics Letters, Vol. 23, Issue 16, pp. 1262-1264 (1998)
http://dx.doi.org/10.1364/OL.23.001262


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Abstract

We have demonstrated, for the first time to our knowledge, a coupled tandem optical parametric oscillator (OPO) configuration in which a second ZnGeP2 OPO is placed within the resonator of the first, KTiOPO4, OPO. A significant enhancement in the overall cascaded efficiency of this OPO compared with standard two-stage OPO's was observed. With a multimode Nd:YAG laser, an overall optical-to-optical efficiency (from 1.06 µm to the mid IR) of 5.2% was obtained from operating only ∼1.4 times above oscillation threshold. The measured overall slope efficiency was attractively high at 35%. With a single set of mirrors we obtained a broad wavelength-tuning range from 2.7 to 8 µm.

© 1998 Optical Society of America

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

Citation
P. B. Phua, K. S. Lai, R. F. Wu, and T. C. Chong, "Coupled tandem optical parametric oscillator (OPO): an OPO within an OPO," Opt. Lett. 23, 1262-1264 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-16-1262

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