Abstract

Using a phase-conjugation configuration based on six-wave mixing interactions, we have investigated in detail the mechanism of photoinduced second-harmonic generation (SHG) in initially centrosymmetric materials. After some theoretical study of the process we discuss how different complementary tests (with the same experimental setup), such as investigations of the polarization properties or the lifetime dependence of the induced χ(2) grating on the solvent, can reveal the microscopic characteristics of the process. We present experimental studies performed in various solutions of an azo-dye molecule (Disperse Red 1) with the 532-nm harmonic light along with the 1.064-μm light from a picosecond-pulsed Nd:YAG laser. The results show good agreement with the theoretical predictions. It is shown moreover that the light-induced χ(2) grating is due to oriental hole burning of the molecules, whereas reorientation of the molecules in the solvent is one major cause of relaxation.

© 1994 Optical Society of America

Full Article  |  PDF Article
More Like This
Quasi-permanent all-optical encoding of noncentrosymmetry in azo-dye polymers

Céline Fiorini, Fabrice Charra, Jean-Michel Nunzi, and Paul Raimond
J. Opt. Soc. Am. B 14(8) 1984-2003 (1997)

Relative contribution of the electric-field-induced third-order effect to second-harmonic generation in poled, doped, amorphous polymers

Ali Dhinojwala, George K. Wong, and John M. Torkelson
J. Opt. Soc. Am. B 11(9) 1549-1554 (1994)

Optically encoded second-harmonic generation in bulk silica-based glasses

T. J. Driscoll and N. M. Lawandy
J. Opt. Soc. Am. B 11(2) 355-371 (1994)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (63)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics