Excited-state nonlinear optical processes in polymers

James Randy Heflin; Qihou L. Zhou; Anthony F. Garito

doi:10.1117/12.46798

1 September 1991 Excited-state nonlinear optical processes in polymers

James Randy Heflin, Qihou L. Zhou, Anthony F. Garito

Proceedings Volume 1497, Nonlinear Optics and Materials; (1991) https://doi.org/10.1117/12.46798
Event: Southcentral '91 (Dallas), 1991, Dallas, TX, United States

Abstract

In atoms and molecules, nonresonant second-order and third-order optical processes mediated by virtual electronic excitations are described by their second-order (beta) ijk(-(omega) 3;(omega) 1,(omega) 2) and third-order (gamma) ijkl(-(omega) 4;(omega) 1,(omega) 2,(omega) 3) optical susceptibilities, respectively. In general, the real population of the initial state for the virtual electronic excitations can be either the usual singlet ground state S0 or an optically pumped excited state Sn. The authors have found for quasi-one (1-D) and quasi-two (2-D) dimensional chain-like and disc-like structures, compared to the ground state, the nonresonant excited state (beta) ijkSn(-(omega) 3;(omega) 1,(omega) 2) or (gamma) ijklSn(-(omega) 4;(omega) 1,(omega) 2,(omega) 3) can markedly increase, and even change sign, when the first (S1) or second (S2) (pi) -electron excited state is optically pumped and populated for timescales sufficiently long to allow nonresonant measurements of (beta) ijkSn(-(omega) 3;(omega) 1,(omega) 2) or (gamma) ijklSn(-(omega) 4;(omega) 1,(omega) 2,(omega) 3).

Citation Download Citation

James Randy Heflin, Qihou L. Zhou, and Anthony F. Garito "Excited-state nonlinear optical processes in polymers", Proc. SPIE 1497, Nonlinear Optics and Materials, (1 September 1991); https://doi.org/10.1117/12.46798

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available