Low-threshold amplified spontaneous emission in thin films of poly(tetraarylindenofluorene) -: art. no. 261917

被引：17

作者：

Laquai, F ^{[1
]}

Keivanidis, PE ^{[1
]}

Baluschev, S ^{[1
]}

Jacob, J ^{[1
]}

Müllen, K ^{[1
]}

Wegner, G ^{[1
]}

机构：

[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 26期

关键词：

D O I：

10.1063/1.2158508

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on amplification of blue light (469 nm) via amplified spontaneous emission in asymmetric planar waveguides of a fully arylated polyindenofluorene derivative. A very low threshold value of about 3 mu J/cm(2) (similar to 375 W/cm(2)) for amplification of light has been demonstrated by pumping the waveguides at 3.0 eV (410 nm) with a stripe shape excitation beam. Moderate gain coefficients up to 21 cm(-1) and loss coefficients around 6 cm(-1) have been measured. All measurements were performed under ambient conditions. No sample degradation could be observed which testifies to the excellent stability of the material against photodegradation. (c) 2005 American Institute of Physics.

引用

收藏

页码：1 / 3

页数：3

相关论文

共 16 条

[1]

Denton GJ, 1997, ADV MATER, V9, P547, DOI 10.1002/adma.19970090705

[2] Two-dimensional distributed feedback lasers using a broadband, red polyfluorene gain medium [J].

Heliotis, G ;

Xia, R ;

Bradley, DDC ;

Turnbull, GA ;

Samuel, IDW ;

Andrew, P ;

Barnes, WL .

JOURNAL OF APPLIED PHYSICS, 2004, 96 (12) :6959-6965

[3] Light amplification and gain in polyfluorene waveguides [J].

Heliotis, G ;

Bradley, DDC ;

Turnbull, GA ;

Samuel, IDW .

APPLIED PHYSICS LETTERS, 2002, 81 (03) :415-417

[4] Laser emission from solutions and films containing semiconducting polymer and titanium dioxide nanocrystals [J].

Hide, F ;

Schwartz, BJ ;

DiazGarcia, MA ;

Heeger, AJ .

CHEMICAL PHYSICS LETTERS, 1996, 256 (4-5) :424-430

[5] Semiconducting polymers: A new class of solid-state laser materials [J].

Hide, F ;

DiazGarcia, MA ;

Schwartz, BJ ;

Andersson, MR ;

Pei, QB ;

Heeger, AJ .

SCIENCE, 1996, 273 (5283) :1833-1836

[6] Poly(tetraarylindenofluorene)s:: New stable blue-emitting polymers [J].

Jacob, J ;

Zhang, JY ;

Grimsdale, AC ;

Müllen, K ;

Gaal, M ;

List, EJW .

MACROMOLECULES, 2003, 36 (22) :8240-8245

[7] Photophysical characterization of light-emitting poly(indenofluorene)s [J].

Keivanidis, PE ;

Jacob, J ;

Oldridge, L ;

Sonar, P ;

Carbonnier, B ;

Baluschev, S ;

Grimsdale, AC ;

Müllen, K ;

Wegner, G .

CHEMPHYSCHEM, 2005, 6 (08) :1650-1660

[8] Amplified spontaneous emission from photopumped films of a conjugated polymer [J].

McGehee, MD ;

Gupta, R ;

Veenstra, S ;

Miller, EK ;

Diaz-Garcia, MA ;

Heeger, AJ .

PHYSICAL REVIEW B, 1998, 58 (11) :7035-7039

[9] Optical amplification in spiro-type molecular glasses [J].

Salbeck, J ;

Schörner, M ;

Fuhrmann, T .

THIN SOLID FILMS, 2002, 417 (1-2) :20-25

[10] The optical gain mechanism in solid conjugated polymers [J].

Schweitzer, B ;

Wegmann, G ;

Giessen, H ;

Hertel, D ;

Bassler, H ;

Mahrt, RF ;

Scherf, U ;

Mullen, K .

APPLIED PHYSICS LETTERS, 1998, 72 (23) :2933-2935