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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 51, Iss. 12 — Apr. 20, 2012
  • pp: 2045–2050

Measurement of nonlinear refractive index coefficient using emission spectrum of filament induced by gigawatt-femtosecond pulse in BK7 glass

Xing Lu, Qingcao Liu, Zuoye Liu, Shaohua Sun, Pengji Ding, Baowei Ding, and Bitao Hu  »View Author Affiliations


Applied Optics, Vol. 51, Issue 12, pp. 2045-2050 (2012)
http://dx.doi.org/10.1364/AO.51.002045


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Abstract

A beam of 33 fs laser pulse with peak power of 15–40 GW was employed to explore a convenient method to determine the nonlinear refractive index coefficient of an optical glass. It is rare to investigate nonlinearities of optical glass with such an extreme ultrashort and powerful laser pulse. According to our method, only a single beam and a few experimental apparatuses are necessary to measure the nonlinear refractive index coefficient. The results from our method are in reasonable agreement with the others, which demonstrates that this new method works well, and the nonlinear refractive index coefficient is independent of measuring technology. Meanwhile, according to our results and those obtained by others in different laser power ranges, it seems that the nonlinear refractive index coefficient has a weak dependence on the laser peak power.

© 2012 Optical Society of America

OCIS Codes
(120.4530) Instrumentation, measurement, and metrology : Optical constants
(190.0190) Nonlinear optics : Nonlinear optics
(190.3270) Nonlinear optics : Kerr effect
(260.5950) Physical optics : Self-focusing

ToC Category:
Nonlinear Optics

History
Original Manuscript: November 11, 2011
Revised Manuscript: January 12, 2012
Manuscript Accepted: January 14, 2012
Published: April 16, 2012

Citation
Xing Lu, Qingcao Liu, Zuoye Liu, Shaohua Sun, Pengji Ding, Baowei Ding, and Bitao Hu, "Measurement of nonlinear refractive index coefficient using emission spectrum of filament induced by gigawatt-femtosecond pulse in BK7 glass," Appl. Opt. 51, 2045-2050 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-12-2045

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