IDENTIFICATION AND ROLE OF 2-PHOTON-EXCITED STATES IN A PI-CONJUGATED POLYMER

被引：143

作者：

LAWRENCE, B

TORRUELLAS, WE

CHA, M

SUNDHEIMER, ML

STEGEMAN, GI

METH, J

ETEMAD, S

BAKER, G

机构：

[1] UNIV CENT FLORIDA, CTR RES ELECTROOPT & LASERS, ORLANDO, FL 32826 USA

[2] BELL COMMUN RES INC, RED BANK, NJ 07701 USA

[3] MICHIGAN STATE UNIV, DEPT CHEM, E LANSING, MI 48824 USA

[4] DUPONT CO INC, DEPT CENT RES & DEV, EXPTL STN, WILMINGTON, DE 19898 USA

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.73.597

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the full two-photon absorption (TPA) spectrum in the transparency range of single-crystal polydiacetylene paratoluene-sulfonate (PTS) using z scan. The spectrum consists of three well-defined two-photon excited states superimposed on a continuum of even-parity states. Comparison of the TPA and the one-photon absorption spectra identifies a two-photon accessible state as the lowest excited state of PTS. The accompanying dispersion in the intensity-dependent refractive index coefficient n2 is also reported.

引用

页码：597 / 600

页数：4

共 29 条

[1] LOCATION OF THE LOWEST EVEN PARITY EXCITED SINGLET-STATE IN POLY (P-PHENYLENEVINYLENE) BY 2-PHOTON FLUORESCENCE SPECTROSCOPY [J].