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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 11 — Jun. 1, 2012
  • pp: 1787–1789

Generation of tunable octave-spanning mid-infrared pulses by filamentation in gas media

Mark Cheng, Anthony Reynolds, Heather Widgren, and Munira Khalil  »View Author Affiliations

Optics Letters, Vol. 37, Issue 11, pp. 1787-1789 (2012)

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The continued development of femtosecond mid-infrared (IR) sources with ultrabroad spectral width is critical for probing and controlling complex molecular structural dynamics on an ultrafast timescale. We report on a sub-20 fs, coherent mid-IR source with an octave-spanning spectral bandwidth (>2000cm1) tunable from 2–8 micrometers (37.5–150 THz), with energy >0.4μJ/pulse at 1 kHz. The mid-IR pulses are generated by four-wave mixing during the filamentation of intense 800 nm and 400 nm pulses in various gas media. Spectral tunability is achieved by the choice of gas, pressure and input 800 nm pulse energy.

© 2012 Optical Society of America

OCIS Codes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(300.6340) Spectroscopy : Spectroscopy, infrared
(320.5550) Ultrafast optics : Pulses
(320.7120) Ultrafast optics : Ultrafast phenomena

ToC Category:
Ultrafast Optics

Original Manuscript: January 18, 2012
Revised Manuscript: March 16, 2012
Manuscript Accepted: March 18, 2012
Published: May 16, 2012

Mark Cheng, Anthony Reynolds, Heather Widgren, and Munira Khalil, "Generation of tunable octave-spanning mid-infrared pulses by filamentation in gas media," Opt. Lett. 37, 1787-1789 (2012)

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