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Wave-dispersed third-order nonlinear optical properties of C60 thin films

✍ Scribed by F. Kajzar; C. Taliani; R. Danieli; S. Rossini; R. Zamboni

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
501 KB
Volume
217
Category
Article
ISSN
0009-2614

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✦ Synopsis

Results of wave-dispersed third harmonic generation measurements in sublimed Cso thin films are reported and discussed within a three-level model. Two strong resonant enhancements in cubic susceptibility xc3) ( -3~; o, w, w) are observed. The first one, occurring at a fundamental wavelength of 1.3 pm with a x@) ( -30; o, W, o) maximum value of 6.1 x 1 O-" esu, is interpreted in terms of a two-photon resonance with the one-photon forbidden electronic Tls level. The second resonance at 1.064 urn, with a maximum value of xc3) ( -3~; w, w, o) = 8.2 x 1 O-" esu is interpreted as a three-photon resonance with the lowest onephoton allowed T,. electronic level.

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