NONLINEAR REFRACTIVE-INDEX CHANGE OF PHOTOACTIVE YELLOW PROTEIN

Citation
J. Vanhanen et al., NONLINEAR REFRACTIVE-INDEX CHANGE OF PHOTOACTIVE YELLOW PROTEIN, Optics communications, 155(4-6), 1998, pp. 327-331
Citations number
25
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Optics
Journal title
ISSN journal
0030-4018
Volume
155
Issue
4-6
Year of publication
1998
Pages
327 - 331
Database
ISI
SICI code
0030-4018(1998)155:4-6<327:NRCOPY>2.0.ZU;2-U
Abstract
The nonlinear refractive index change of photoactive yellow protein (P YP) was examined by measuring the shape of an originally Gaussian-shap ed laser beam after it had propagated through a PYP-film. An unique re shaping of the beam profile was observed. By this data the nonlinear p art of the refractive index was calculated by applying optical map tra nsformation. The result was verified by reconstructing the far-field p attern of the beam with the calculated nonlinear refractive index and the Rayleigh-Sommerfeld diffraction formula. The results show that PYP exhibits much stronger nonlinearity than Kerr-Like materials. (C) 199 8 Elsevier Science B.V. All rights reserved.