Stimulated radiation of tetracene impurity-containing anthracene crystals

Avanesyan, H. S.; Benderskiĭ, V. A.; Brikenstein, V. Kh.; Broude, V. L.; Lavrushko, A. G.

doi:10.1002/pssa.2210190248

Cited by 20 publications

(3 citation statements)

References 2 publications

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“…1-8 While lasing from organic molecules was identified in the late 1960's, [9][10][11] the renewed interest in this subject is driven by the possibility for realizing electrically pumped organic lasers. The issue of lasing in electrically pumped organics has recently been explored in the case of polymer films.…”

Section: Optical Properties Of Molecular Organic Semiconductor Thin Fmentioning

confidence: 99%

Optical properties of molecular organic semiconductor thin films under intense electrical excitation

Kozlov

Burrows

Parthasarathy

et al. 1999

Applied Physics Letters

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Section: Optical Properties Of Molecular Organic Semiconductor Thin Fmentioning

confidence: 99%

Optical properties of molecular organic semiconductor thin films under intense electrical excitation

Kozlov

Burrows

Parthasarathy

et al. 1999

Applied Physics Letters

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“…Light generation i n the same electron-vibrational transition of anthracene guest molecules in a fluorene crystal has been observed a t direct optical pumping of the impurity [8]. I n [9] a stimulated emission of the tetracene impurity i n anthracene crystals was discovered, and pumping of the impurity was carried out by exciton energy transfer, the generation threshold being 3 to 4 times lower than in the case of direct optical pumping.…”

Section: Introductionmentioning

confidence: 75%

Stimulated emission of mixed molecular crystals

Avanesyan

Benderskiĭ

Brikenshtein

et al. 1975

Phys. Stat. Sol. (a)

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The fluorescence spectra of anthracene crystals doped with tetracene and perylene in wide range of pumping have been studied at 4.2 to 300 K. Starting from impurity concen‐1 trations of (0.5 to 1) × 1017 cm−3 a superlinear growth and narrowing of one or of severa fluorescence spectrum bands have been observed at pumping levels of 1020 to 1022 cm−2 s−1. The intensity of the amplified bands increases 102 to 103 times with an increase of pumping by a factor of 3 to 5 relative to the threshold. The stimulated emission of anthracene and of impurities is polarized. The results of the multi‐frequency generation of the impurity allow to estimate the relaxation times of the lower vibrational sublevels of perylene: 3 × 10−10 s for the vibration 357 cm−1, and ≦ 10−11 s for the 1380 cm−1 vibration.

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“…In the early 1970s, stimulated emission ͑SE͒ was demonstrated in pure and doped crystals of organic semiconductors. 7,8 In 1997, Fichou et al 9 reported SE from a monolithic organic single crystal. Since then, an increasing number of ASE have been obtained from several classes of molecular crystals such as thiophene derivatives, 10,11 p-sexiphenyl, 12 fluorene/ phenylene cooligmer.…”

mentioning

confidence: 99%

Amplified spontaneous emission in the cyano-substituted oligo(p-phenylenevinylene) organic crystals: Effect of excitation wavelength

Fang

Chen

Yang

et al. 2010

Applied Physics Letters

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We report an unusual phenomenon in amplified spontaneous emission ͑ASE͒ from cyano-substituted oligo͑p-pheny lenevinylene͒ ͑CNDPASDB͒ single crystals, i.e., the ASE peak wavelength, exhibits varied dependence on the pumping wavelength ex. The former is basically kept a constant when ex Ͻ 505 nm, while a rapid redshift from 560 to 572 nm occurs when ex Ͼ 505 nm. The observation is different from stimulated Raman resonant scattering ͑SRRS͒ in two following aspects: the nonconstant Stokes shift and a much broader emission linewidth. A model describing competition between the stimulated emission and vibration relaxations has been proposed to interpret the underlying mechanism.

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Stimulated radiation of tetracene impurity-containing anthracene crystals

Cited by 20 publications

References 2 publications

Optical properties of molecular organic semiconductor thin films under intense electrical excitation

Optical properties of molecular organic semiconductor thin films under intense electrical excitation

Stimulated emission of mixed molecular crystals

Amplified spontaneous emission in the cyano-substituted oligo(p-phenylenevinylene) organic crystals: Effect of excitation wavelength

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