Optimum output coupling in optical oscillators using an antiresonant ring interferometer
Optics Letters, Vol. 35, Issue 16, pp. 2786-2788 (2010)
http://dx.doi.org/10.1364/OL.35.002786
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Abstract
We describe a simple and universal method for absolute optimization of output power from optical oscillators using interferometry. By incorporating an antiresonant ring interferometer in one arm of the oscillator cavity, simple adjustments to the interferometer provide continuously variable output coupling over a broad spectral range and under any operating conditions. We demonstrate the technique using a femtosecond optical parametric oscillator (OPO), where we show continuously adjustable output coupling from 1% to 60%. By operating the OPO under an optimized output coupling of ~30%, we obtain ~200 mW of extracted power, more than twice that with an ~4% conventional output coupler, across the full tuning range. We also show that the technique has no detrimental effect on the spatiotemporal characteristics of the output, with the extracted signal exhibiting a Gaussian beam profile and near-transform-limited pulse durations.
© 2010 Optical Society of America
OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(140.3600) Lasers and laser optics : Lasers, tunable
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(230.4910) Optical devices : Oscillators
(140.3325) Lasers and laser optics : Laser coupling
ToC Category:
Lasers and Laser Optics
History
Original Manuscript: April 22, 2010
Revised Manuscript: June 29, 2010
Manuscript Accepted: July 2, 2010
Published: August 13, 2010
Citation
A. Esteban-Martin, O. Kokabee, and M. Ebrahim-Zadeh, "Optimum output coupling in optical oscillators using an antiresonant ring interferometer," Opt. Lett. 35, 2786-2788 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-16-2786
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