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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 21 — Nov. 1, 2013
  • pp: 4281–4284

Frequency comb generation by a continuous-wave-pumped optical parametric oscillator based on cascading quadratic nonlinearities

Ville Ulvila, C. R. Phillips, Lauri Halonen, and Markku Vainio  »View Author Affiliations


Optics Letters, Vol. 38, Issue 21, pp. 4281-4284 (2013)
http://dx.doi.org/10.1364/OL.38.004281


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Abstract

We report optical frequency comb generation by a continuous-wave pumped optical parametric oscillator (OPO) without any active modulation. The OPO is configured as singly resonant with an additional nonlinear crystal (periodically poled MgO:LiNbO3) placed inside the OPO for phase mismatched second harmonic generation (SHG) of the resonating signal beam. The phase mismatched SHG causes cascading χ(2) nonlinearities, which can substantially increase the effective χ(3) nonlinearity in MgO:LiNbO3, leading to spectral broadening of the OPO signal beam via self-phase modulation. The OPO generates a stable 4 THz wide (30dB) frequency comb centered at 1.56 μm.

© 2013 Optical Society of America

OCIS Codes
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(190.5940) Nonlinear optics : Self-action effects
(190.4223) Nonlinear optics : Nonlinear wave mixing

ToC Category:
Nonlinear Optics

History
Original Manuscript: August 16, 2013
Revised Manuscript: September 19, 2013
Manuscript Accepted: September 20, 2013
Published: October 17, 2013

Citation
Ville Ulvila, C. R. Phillips, Lauri Halonen, and Markku Vainio, "Frequency comb generation by a continuous-wave-pumped optical parametric oscillator based on cascading quadratic nonlinearities," Opt. Lett. 38, 4281-4284 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-21-4281

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