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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 23 — Dec. 1, 2013
  • pp: 5110–5113

Femtosecond-laser pumped CdSiP2 optical parametric oscillator producing 100  MHz pulses centered at 6.2  μm

Zhaowei Zhang, Derryck T. Reid, S. Chaitanya Kumar, Majid Ebrahim-Zadeh, Peter G. Schunemann, Kevin T. Zawilski, and Christopher R. Howle  »View Author Affiliations


Optics Letters, Vol. 38, Issue 23, pp. 5110-5113 (2013)
http://dx.doi.org/10.1364/OL.38.005110


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Abstract

We report the first, to the best of our knowledge, femtosecond-laser-pumped optical parametric oscillator (OPO) based on the newly developed nonlinear crystal, CdSiP2. The OPO was synchronously pumped by a mode-locked Yb:KYW/Yb:fiber master-oscillator power amplifier, providing 1.053 μm pump pulses with durations of 130 fs at a repetition rate of 100 MHz. The 0.5-mm-thick CdSiP2 crystal was cut for a type-I noncritical interaction, providing a broad phase-matching bandwidth and ensuring excellent temporal overlap among the pump, signal, and idler pulses. The OPO generated signal pulses with a spectral coverage over 1260–1310 nm and mid-infrared idler pulses with a broad spectral coverage at 5.8–6.6 μm (6.2 THz). With a 2% output coupler (OC), the threshold pump power was 600 mW. At the maximum pump power of 1.6 W, 0.55 W was absorbed due to two-photon absorption and residual linear absorption in the CdSiP2 crystal, 0.75 W was transmitted, and 53 mW signal power was extracted through the OC. We estimate that the generated idler power was 24 mW.

© 2013 Optical Society of America

OCIS Codes
(140.7090) Lasers and laser optics : Ultrafast lasers
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(190.7110) Nonlinear optics : Ultrafast nonlinear optics

ToC Category:
Nonlinear Optics

History
Original Manuscript: September 2, 2013
Revised Manuscript: November 2, 2013
Manuscript Accepted: November 2, 2013
Published: November 25, 2013

Citation
Zhaowei Zhang, Derryck T. Reid, S. Chaitanya Kumar, Majid Ebrahim-Zadeh, Peter G. Schunemann, Kevin T. Zawilski, and Christopher R. Howle, "Femtosecond-laser pumped CdSiP2 optical parametric oscillator producing 100  MHz pulses centered at 6.2  μm," Opt. Lett. 38, 5110-5113 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-23-5110

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