ENHANCED NONRESONANT NONLINEAR OPTICAL PROCESSES FROM POPULATED ELECTRONIC EXCITED-STATES

被引：61

作者：

ZHOU, QL

HEFLIN, JR

WONG, KY

ZAMANIKHAMIRI, O

GARITO, AF

机构：

[1] Department of Physics, University of Pennsylvania, Philadelphia

来源：

PHYSICAL REVIEW A | 1991年 / 43卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.43.1673

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A general enhancement mechanism is reported for nonlinear optical processes originating from real population of electronic excited states. The calculated nonresonant third-order optical susceptibility gamma-ijkl(Sn)(-omega-4; omega-1, omega-3) of quasi-one-dimensional conjugated linear chains can be enhanced by orders of magnitude, or even change sign, when the first (S1) or second (S2) electronic excited state is optically pumped and then populated for times suitably long to perform nonresonant measurements of gamma-ijkl(Sn)(-omega-4; omega-1, omega-2, omega-3) at frequencies different from the resonant pump frequency.

引用

页码：1673 / 1676

页数：4

共 11 条

[1]

Bloembergen N., 1965, NONLINEAR OPTICS

[2]

GARITO AF, 1990, 1990 INT C NONL OPT, V1, P73

[3]

GARITO AF, 1989, 1989 OPT SOC AM ANN, V18, P22

[4] NONLINEAR OPTICAL-PROPERTIES OF LINEAR-CHAINS AND ELECTRON-CORRELATION EFFECTS [J].