Photoluminescent properties of dye-doped poly(N-vinyleabzole) (PVK) in microcavity
2000; Elsevier BV; Volume: 363; Issue: 1-2 Linguagem: Inglês
10.1016/s0040-6090(99)01033-0
ISSN1879-2731
AutoresDongjiang Wu, Lijun Wang, Yun Liu, Shumei Wang, Yongqiang Ning, Changqing Jin, Jiamin Zhao, Xingyuan Liu, Sheng‐Li Wu, Xiaodong He, Lixiang Wang, Dongge Ma, Daike Wang, Xiabin Jing, Fosong Wang,
Tópico(s)Photonic Crystals and Applications
ResumoA surface emitting microcavity was formed by sandwiching a polymer film containing poly(N-vinyleabzole) (PVK). 8-hydroxyquinoline aluminium (Alq3) and 4-(Dicyanome thylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-Pyran(DCM) between a distributed Bragg reflector (DBR) with a reflectivity of 99% and a silver film. The sample was optically pumped with 250 ps pulses at 2 Hz repetition rate by a 355 nm line of the third harmonic of a mode-lock Nd:YAG laser. The lasing phenomenon was observed in DCM-doped PVK microcavity. The full width at half maximum (FWHM) was 3 nm with the peak wavelength at 602 nm. The threshold energy for lasing was estimated to be about 3 μJ.
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