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Optics Letters

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  • Vol. 25, Iss. 16 — Aug. 15, 2000
  • pp: 1192–1194

Measurement of the thermal contribution to the nonlinear refractive index of air at 1064nm

Sean J. Bentley, Robert W. Boyd, William E. Butler, and Adrian C. Melissinos  »View Author Affiliations


Optics Letters, Vol. 25, Issue 16, pp. 1192-1194 (2000)
http://dx.doi.org/10.1364/OL.25.001192


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Abstract

The thermal contribution to the nonlinear refractive index of air at 1.064μm was measured with a high-finesse Fabry-Perot cavity and a 500-mW cw laser beam. At room temperature and pressure, the nonlinear refractive-index coefficient of air was found to be n2(th)=(-1.9±0.2)×10 -14 cm2/W for a beam waist radius of 0.23 mm and was found to be independent of the relative humidity. The thermal nonlinearities of N2 , O2 , and CO2 were also measured, and it was found that the dominant contribution to air is its O2 content.

© 2000 Optical Society of America

OCIS Codes
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(190.0190) Nonlinear optics : Nonlinear optics

Citation
Sean J. Bentley, Robert W. Boyd, William E. Butler, and Adrian C. Melissinos, "Measurement of the thermal contribution to the nonlinear refractive index of air at 1064nm," Opt. Lett. 25, 1192-1194 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-16-1192

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