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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 5 — Mar. 1, 2014
  • pp: 1212–1215

High peak-power mid-infrared ZnGeP2 optical parametric oscillator pumped by a Tm:fiber master oscillator power amplifier system

Martin Gebhardt, Christian Gaida, Pankaj Kadwani, Alex Sincore, Nils Gehlich, Cheonha Jeon, Lawrence Shah, and Martin Richardson  »View Author Affiliations


Optics Letters, Vol. 39, Issue 5, pp. 1212-1215 (2014)
http://dx.doi.org/10.1364/OL.39.001212


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Abstract

We report on the utilization of a novel Tm:fiber laser source for mid-IR ZnGeP2 (ZGP) optical parametric oscillator (OPO) pumping. The pump laser is built in a master oscillator power-amplifier configuration delivering up to 3.36 W of polarized, diffraction limited output power with 7 ns pulse duration and 4 kHz repetition rate. This corresponds to a peak power of 121kW and a pulse energy of 0.84mJ. With this source, we generated 27.9 kW of total mid-IR peak power in a doubly resonant oscillator (DRO) configuration. This is, to the best of our knowledge, the highest ever demonstrated mid-IR peak power from a directly Tm:fiber laser pumped ZGP OPO. Moreover, a DRO output with about 284 μJ of total mid-IR pulse energy was demonstrated using 100 ns pump pulses. The wavelength tuning of the idler was extended to 6 μm with lower output power in another OPO experiment.

© 2014 Optical Society of America

OCIS Codes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: November 21, 2013
Revised Manuscript: January 14, 2014
Manuscript Accepted: January 20, 2014
Published: February 21, 2014

Citation
Martin Gebhardt, Christian Gaida, Pankaj Kadwani, Alex Sincore, Nils Gehlich, Cheonha Jeon, Lawrence Shah, and Martin Richardson, "High peak-power mid-infrared ZnGeP2 optical parametric oscillator pumped by a Tm:fiber master oscillator power amplifier system," Opt. Lett. 39, 1212-1215 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-5-1212


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