Higher-order optical nonlinearities in 4'-dimethylamino-N-methyl-4-stilbazolium tosylate

Kumar, G. Ravindra ; Dharmadhikari, A. K. ; Roy, Basudev ; Roy, Sukhdev ; Dharmadhikari, J. A. ; Mishra, Alpana (2004) Higher-order optical nonlinearities in 4'-dimethylamino-N-methyl-4-stilbazolium tosylate Optics Communications, 235 (1-3). pp. 195-200. ISSN 0030-4018

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00304...

Related URL: http://dx.doi.org/10.1016/j.optcom.2004.02.042


Higher-order optical nonlinearities in an organic molecular salt, 4'-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST), are investigated by a two-beam self-diffraction technique using a picosecond laser under single photon as well as two-photon absorption. The intensity dependence of the diffracted signals is measured. At a low concentration (1.0 × 10-4mol/l) the ratio of Xeff(5)/Xeff(3) is found to be 0.24 × 10-6 cm3/erg. A diffraction efficiencies of 1.2% and 0.02% are observed in the first and sixth-order signals, respectively.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Multi ave-mixing; Optical Nonlinearity; Self-diffraction; High Order Nonlinear Susceptibility; Stilbazolium salts
ID Code:29704
Deposited On:23 Dec 2010 05:32
Last Modified:04 Jun 2011 09:30

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