Intensity-induced nonlinear effects in UV window materials |
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| Authors: | Y. P. Kim M. H. R. Hutchinson |
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| Affiliation: | (1) Optics Section, The Blackett Laboratory, Imperial College, Prince Consort Road, SW7 2BZ London, UK;(2) Present address: Laser Laboratory, Korea Standards Research Institute, Taedok Science Town, P.O. Box 3, 302-340 Taejon, Republic of Korea |
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| Abstract: | Intensity-induced nonlinear effects in optical window materials have been investigated at 308 nm. The absolute two-photon absorption coefficients for fused silica, CaF2, BaF2, Al2O3 and ADP crystals have been measured by using a single 120 ps, transform-limited pulse from the second harmonic of a distributed feedback (DFB) dye laser. The nonlinear refractive index coefficient  has been obtained from measurements of far-field intensity distributions. |
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| Keywords: | 42.65.– k 42.70.– a 78.20.– e |
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