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      Multicolor lasing prints

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      Author(s)
      Ta V.D.
      Yang, S.
      Wang, Y.
      Gao, Y.
      He, T.
      Chen, R.
      Demir, Hilmi Volkan
      Sun H.
      Date
      2015
      Source Title
      Applied Physics Letters
      Print ISSN
      0003-6951
      Publisher
      American Institute of Physics Inc.
      Volume
      107
      Issue
      22
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      This work demonstrates mass production of printable multi-color lasing microarrays based on uniform hemispherical microcavities on a distributed Bragg reflector using inkjet technique. By embedding two different organic dyes into these prints, optically pumped whispering gallery mode microlasers with lasing wavelengths in green and red spectral ranges are realized. The spectral linewidth of the lasing modes is found as narrow as 0.11 nm. Interestingly, dual-color lasing emission in the ranges of 515-535 nm and 585-605 nm is simultaneously achieved by using two different dyes with certain ratios. Spectroscopic measurements elucidate the energy transfer process from the green dye (donor) to the red one (acceptor) with an energy transfer efficiency up to 80% in which the nonradiative Förster resonance energy transfer dominates. As such, the acceptor lasing in the presence of donor exhibits a significantly lower (∼2.5-fold) threshold compared with that of the pure acceptor lasing with the same concentration. © 2015 AIP Publishing LLC.
      Keywords
      Energy transfer
      Energy transfer efficiency
      Energy transfer process
      Ink-jet technique
      Lasing wavelength
      Optically pumped
      Resonance energy transfer
      Spectral line width
      Spectroscopic measurements
      Whispering gallery modes
      Permalink
      http://hdl.handle.net/11693/26363
      Published Version (Please cite this version)
      http://dx.doi.org/10.1063/1.4936628
      Collections
      • Department of Electrical and Electronics Engineering 3868
      • Department of Physics 2485
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