Low-threshold blue amplified spontaneous emission in a statistical copolymer and its blend

Tae Woo Lee, O. Ok Park, Dong Hoon Choi, Hyun Nam Cho, Young Chul Kim

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

We report low-threshold, blue amplified spontaneous emission (ASE) in a statistical copolymer, poly(9,9-dihexylfluorene-2,7-divinylene-m- phenylenevinylene-stat-p-phenylenevinylene) (CPDHFPV) and its blend with poly(9-vinylcarbazole) (PVK). PVK and CPDHFPV acted as the donor and the acceptor of the Förster-type excitation energy transfer, respectively. A single component waveguide made of CPDHFPV gave the threshold energy of 160nJ/cm2/pulse. Moreover, that of the PVK/CPDHFPV (95/5 by wt.) blend device was as low as 20nJ/cm2/pulse. From the relationship between the ASE intensity and the film thickness, we suggest that the optimum thickness for the photopumped ASE should be the transverse electric-mode cutoff thickness.

Original languageEnglish
Pages (from-to)424-426
Number of pages3
JournalApplied Physics Letters
Volume81
Issue number3
DOIs
Publication statusPublished - 2002 Jul 15
Externally publishedYes

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spontaneous emission
copolymers
thresholds
pulses
film thickness
cut-off
energy transfer
waveguides
excitation
energy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Low-threshold blue amplified spontaneous emission in a statistical copolymer and its blend. / Lee, Tae Woo; Park, O. Ok; Choi, Dong Hoon; Cho, Hyun Nam; Kim, Young Chul.

In: Applied Physics Letters, Vol. 81, No. 3, 15.07.2002, p. 424-426.

Research output: Contribution to journalArticle

Lee, Tae Woo ; Park, O. Ok ; Choi, Dong Hoon ; Cho, Hyun Nam ; Kim, Young Chul. / Low-threshold blue amplified spontaneous emission in a statistical copolymer and its blend. In: Applied Physics Letters. 2002 ; Vol. 81, No. 3. pp. 424-426.
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