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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 22 — Nov. 4, 2013
  • pp: 26612–26619

Broadly tunable femtosecond mid-infrared source based on dual photonic crystal fibers

Yuhong Yao and Wayne H. Knox  »View Author Affiliations


Optics Express, Vol. 21, Issue 22, pp. 26612-26619 (2013)
http://dx.doi.org/10.1364/OE.21.026612


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Abstract

We report a novel scheme of generating broadly tunable femtosecond mid-IR pulses based on difference frequency mixing the outputs from dual photonic crystal fibers (PCF). With a 1.3 W, 1035 nm, 300 fs and 40 MHz Yb fiber chirped pulse amplifier as the laser source, a PCF with single zero dispersion wavelength (ZDW) at the laser wavelength is employed to spectrally broaden a portion of the laser pulses. Facilitated by self-phase modulation, its output spectrum possesses two dominant outermost peaks that can be extended to 970 nm and 1092 nm. A different PCF with two closely spaced ZDWs around the laser wavelength is used to generate the intense Stokes pulses between 1240 – 1260 nm. Frequency mixing the dual PCFs outputs in an AgGaS2 crystal results in mid-IR pulses broadly tunable from 4.2 μm to 9 μm with a maximum average power of 640 µW at 4.5 μm, corresponding to 16 pJ of pulse energy.

© 2013 Optical Society of America

OCIS Codes
(140.7090) Lasers and laser optics : Ultrafast lasers
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(190.4223) Nonlinear optics : Nonlinear wave mixing
(060.5295) Fiber optics and optical communications : Photonic crystal fibers
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Ultrafast Optics

History
Original Manuscript: September 9, 2013
Revised Manuscript: October 19, 2013
Manuscript Accepted: October 21, 2013
Published: October 28, 2013

Citation
Yuhong Yao and Wayne H. Knox, "Broadly tunable femtosecond mid-infrared source based on dual photonic crystal fibers," Opt. Express 21, 26612-26619 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-22-26612


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