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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 27, Iss. 10 — Oct. 1, 2010
  • pp: 2014–2019

Single-mode laser emission at 825 nm from a photopumped cylindrical microresonator based on a polymer semiconductor

Takeyuki Kobayashi and Maroussia Vavasseur  »View Author Affiliations

JOSA B, Vol. 27, Issue 10, pp. 2014-2019 (2010)

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A near-infrared-emitting microlaser has been demonstrated, which is based on a semiconducting non-conjugated polymer. A luminescent polymer layer is formed on a silica optical fiber 125 μ m in diameter by self-assembly with poly(9-vinylcarbazole) containing an electron-transport material, 2-(4-Biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole, and a near-infrared-emitting compound, 2-(6-(p-dimethylaminophenyl)-2,4-neopentylene-1,3,5-hexatrienyl)-3-ethylbenzothiazolium perchlorate. The cylindrical polymer microcavity shows laser emission at 825 nm when it is transversally photopumped at 532 nm with a nanosecond Nd:yttrium aluminum garnet laser. The resonance of the microcavity is characterized by a cavity quality factor Q = ( 2.7 ± 0.1 ) × 10 3 , which is determined from the laser spectral width. Furthermore, a threshold analysis is carried out by taking into account the effects of the ground-state absorption of the chromophore and Rayleigh scattering of the gain medium. The analysis shows that the minimum threshold lies in the vicinity of 824 nm, which is consistent with the experimentally observed laser emission line at 825 nm.

© 2010 Optical Society of America

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(160.6000) Materials : Semiconductor materials
(250.3680) Optoelectronics : Light-emitting polymers
(140.3945) Lasers and laser optics : Microcavities
(250.5960) Optoelectronics : Semiconductor lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: April 6, 2010
Revised Manuscript: August 1, 2010
Manuscript Accepted: August 5, 2010
Published: September 16, 2010

Takeyuki Kobayashi and Maroussia Vavasseur, "Single-mode laser emission at 825 nm from a photopumped cylindrical microresonator based on a polymer semiconductor," J. Opt. Soc. Am. B 27, 2014-2019 (2010)

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