Femtosecond Measurements of Two-Photon Absorption Coefficients at λ = 264 nm in Glasses, Crystals, and Liquids
Applied Optics, Vol. 41, Issue 21, pp. 4365-4376 (2002)
http://dx.doi.org/10.1364/AO.41.004365
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Abstract
Using ultraviolet femtosecond pulses with high irradiance stability, we measured the two-photon absorption (TPA) coefficients in a number of substances with a total accuracy of ~10%. Six commercial fused-silica samples (KU-1, Corning 7940, SQ, Suprasil, Herasil, and Infrasil) possess TPA coefficients (β values) of ~2 × 10−11 cm/W. For crystalline quartz and sapphire, the following β values were obtained: (1.2 ± 0.2) × 10−11 and (9.4 ± 1.2) × 10−11 cm/W, respectively. In β-barium borate crystal the TPA coefficient depends on crystal cut, beam polarization, or both and varies from (47 ± 5) × 10−11 to (68 ± 6) × 10−11 cm/W. For eight liquids that were studied (water, heavy water, ethanol, methanol, hexane, cyclohexane, 1, 2-dichloroethane, and chloroform) the β value lies from (34 ± 3) × 10−11 to (95 ± 11) × 10−11 cm/W.
© 2002 Optical Society of America
[Optical Society of America ]
OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(160.4670) Materials : Optical materials
(160.4760) Materials : Optical properties
(160.6030) Materials : Silica
(190.4180) Nonlinear optics : Multiphoton processes
Citation
Adrian Dragonmir, John G. McInerney, and David N. Nikogosyan, "Femtosecond Measurements of Two-Photon Absorption Coefficients at λ = 264 nm in Glasses, Crystals, and Liquids," Appl. Opt. 41, 4365-4376 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-21-4365
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