NEAR-RESONANT 3RD-ORDER OPTICAL NONLINEARITIES IN P-TOLUENE SULFONATE POLYDIACETYLENE

被引：37

作者：

BOLGER, J

HARVEY, TG

JI, W

KAR, AK

MOLYNEUX, S

WHERRETT, BS

BLOOR, D

NORMAN, P

机构：

[1] UNIV DURHAM,SCH ENGN & APPL SCI,DURHAM DG1 3LE,ENGLAND

[2] STC TECHNOL LTD,HARLOW,ESSEX,ENGLAND

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1992年 / 9卷 / 09期

关键词：

D O I：

10.1364/JOSAB.9.001552

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report single-wavelength subpicosecond and nanosecond excite-probe and four-wave mixing experiments near the exciton resonance in p-toluene sulfonate polydiacetylene. Contributions to the third-order susceptibility chi(3) resulting from phase-space filling, photoinduced absorption, and two-photon absorption are identified. A three-level rate-equation model that accounts for the change in sign of the nonlinear absorption observed at near-resonant frequencies is discussed.

引用

页码：1552 / 1557

页数：6

共 22 条

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