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Journal of Russian Laser Research

, Volume 32, Issue 2, pp 139–143 | Cite as

Widely tunable amplified spontaneous emission of Pyrromethene-650-doped nematic liquid crystal

  • Rongwei Fan
  • Yugang Jiang
  • Yuanqin Xia
  • Deying Chen
Article

Abstract

We study amplified spontaneous emission of Pyrromethene-650-doped nematic liquid crystal deposited onto quartz and glass substrates. We prepare samples with different dye-doped concentrations pumped with a Nd:YAG laser at 532 nm. With an applied electric field, a tuning range of the amplified spontaneous emission of more than 20 nm was realized in each sample due to changing the effective refractive index of the nematic-liquid-crystal layer caused by the reorientation of nematic-liquid-crystal molecules. We show that there exist a threshold voltage and a saturation voltage for all the samples. With the increase in the dye-doped concentration, the peak wavelength of the amplified spontaneous emission has a red shift of about several nanometers.

Keywords

tunable amplified spontaneous emission dye laser PM650 liquid crystal 

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Copyright information

© Springer Science+Business Media, Inc. 2011

Authors and Affiliations

  • Rongwei Fan
    • 1
  • Yugang Jiang
    • 1
  • Yuanqin Xia
    • 1
  • Deying Chen
    • 1
  1. 1.National Key Laboratory of Science and Technology on Tunable LaserHarbin Institute of TechnologyHarbinChina

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