Mechanism of gain narrowing in conjugated polymer thin films

被引：35

作者：

Haugeneder, A

Hilmer, M

Kallinger, C

Perner, M

Spirkl, W

Lemmer, U

Feldmann, J

Scherf, U

机构：

[1] Univ Munich, Lehrstuhl Photon & Optoelekt, Sekt Phys, D-80799 Munich, Germany

[2] Max Planck Inst Polymerforsch, D-55128 Mainz, Germany

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 1998年 / 66卷 / 03期

关键词：

D O I：

10.1007/s003400050406

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a detailed investigation of optical gain narrowing processes in thin films of a conjugated ladder-type poly(p-phenylene) polymer. The intensity-dependent optical emission spectra of samples of varying thickness are compared. For thin high-quality spin-coated samples spectral narrowing of the emission is observed for pump pulse energies as low as 10 nJ. Picosecond time-resolved measurements show that the spectral narrowing is accompanied by an accelerated emission for high pump energies. Our experimental findings are in full agreement with the assumption that amplified spontaneous emission in a lateral direction is the underlying physical mechanism.

引用

页码：389 / 392

页数：4

共 16 条

[1] Blue superradiance from neat semiconducting alternating copolymer films
Brouwer, HJ
Krasnikov, VV
Hilberer, A
Hadziioannou, G
[J]. ADVANCED MATERIALS, 1996, 8 (11) : 935 - &
[2] Denton GJ, 1997, ADV MATER, V9, P547, DOI 10.1002/adma.19970090705
[3] AN ULTRAFAST LIGHT GATE
DUGUAY, MA
HANSEN, JW
[J]. APPLIED PHYSICS LETTERS, 1969, 15 (06) : 192 - &
[4] Waveguided visible lasing effects in a dye-doped sol-gel glass film
Finkelstein, I
Ruschin, S
Sorek, Y
Reisfeld, R
[J]. OPTICAL MATERIALS, 1997, 7 (1-2) : 9 - 13
[5] Cooperative emission in pi-conjugated polymer thin films
Frolov, SV
Gellermann, W
Ozaki, M
Yoshino, K
Vardeny, ZV
[J]. PHYSICAL REVIEW LETTERS, 1997, 78 (04) : 729 - 732
[6] Narrow-band emissions from conjugated-polymer films
Gelinck, GH
Warman, JM
Remmers, M
Neher, D
[J]. CHEMICAL PHYSICS LETTERS, 1997, 265 (3-5) : 320 - 326
[7] LASER ACTION OF DYES IN GELATIN
HANSCH, TW
PERNIER, M
[J]. IEEE JOURNAL OF QUANTUM ELECTRONICS, 1971, QE 7 (01) : 45 - &
[8] HAUGENEDER A, IN PRESS
[9] Semiconducting polymers: A new class of solid-state laser materials
Hide, F
DiazGarcia, MA
Schwartz, BJ
Andersson, MR
Pei, QB
Heeger, AJ
[J]. SCIENCE, 1996, 273 (5283) : 1833 - 1836
[10] Laser action in poly(m-phenylenevinylene-co-2,5-dioctoxy-p-phenylenevinylene)
Holzer, W
Penzkofer, A
Gong, SH
Bleyer, A
Bradley, DDC
[J]. ADVANCED MATERIALS, 1996, 8 (12) : 974 - 978

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