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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 6 — Jun. 1, 2013
  • pp: 1627–1630

Coherent infrared spectroscopy system from terahertz to near infrared using air plasma produced by 10-fs pulses

Eiichi Matsubara, Masaya Nagai, and Masaaki Ashida  »View Author Affiliations


JOSA B, Vol. 30, Issue 6, pp. 1627-1630 (2013)
http://dx.doi.org/10.1364/JOSAB.30.001627


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Abstract

We generated ultrabroadband coherent infrared pulses in a spectral range of 1–200 THz through the use of air plasma produced by hollow fiber compressed submillijoule 10-fs pulses and their second harmonics. Moreover, we coherently detected the electric-field profile in the range up to 150 THz through field-induced second harmonic generation of the probe in air. This result demonstrates the advantage of using air for detection, in terms of both spectral range and sensitivity, over photoconductive antennas and electro-optic (EO) sampling. The quadratic dependence of the signal sensitivity on the probe pulse energy shortens the effective probe pulse duration and contributes to the higher frequency detection than in the case of EO sampling with a crystal.

© 2013 Optical Society of America

OCIS Codes
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(350.5400) Other areas of optics : Plasmas
(300.6495) Spectroscopy : Spectroscopy, teraherz
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Spectroscopy

History
Original Manuscript: February 20, 2013
Revised Manuscript: April 8, 2013
Manuscript Accepted: April 22, 2013
Published: May 22, 2013

Citation
Eiichi Matsubara, Masaya Nagai, and Masaaki Ashida, "Coherent infrared spectroscopy system from terahertz to near infrared using air plasma produced by 10-fs pulses," J. Opt. Soc. Am. B 30, 1627-1630 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-6-1627

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