Enhanced efficiency of AlGaInP disk laser by in-well pumping. Mateo, C. M. N.; Brauch, U.; Schwarzbaeck, T.; Kahle, H.; Jetter, M.; Ahmed, M. A.; Michler, P.; and Graf, T. OPTICS EXPRESS, 23(3):2472-2486, OPTICAL SOC AMER, 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA, FEB 9, 2015.
doi  abstract   bibtex   
The performance of a 665-nm GaInP disk laser operated continuous-wave at 15 degrees C both in-well-pumped at 640 nm and barrier pumped at 532 nm is reported. The efficiency with respect to the absorbed power was enhanced by 3.5 times when using a 640-nm pump instead of a 532-nm pump. In-well pumping which is based on the absorption of the pump photons within the quantum-well heterostructures of the gain region instead of short-wavelength absorption in the barrier and spacer regions reduces the quantum defect between pump and laser photon and hence the heat generation. A slope efficiency of 60% with respect to the absorbed pump power was obtained by in-well pumping at 15 degrees C. Continuous-wave laser operation was further demonstrated at heat sink temperatures of up to 55 degrees C. Both the measurement of photoluminescence and COMSOL simulation show that the overall heat load in the in-well pumped laser is smaller than in the barrier-pumped laser. These results demonstrate the potential of optical in-well pumping for the operation of red AlGaInP disk lasers if combined with means for efficient pump-light absorption. (C) 2015 Optical Society of America
@article{ISI:000349688800073,
  abstract = {{The performance of a 665-nm GaInP disk laser operated continuous-wave at
   15 degrees C both in-well-pumped at 640 nm and barrier pumped at 532 nm
   is reported. The efficiency with respect to the absorbed power was
   enhanced by 3.5 times when using a 640-nm pump instead of a 532-nm pump.
   In-well pumping which is based on the absorption of the pump photons
   within the quantum-well heterostructures of the gain region instead of
   short-wavelength absorption in the barrier and spacer regions reduces
   the quantum defect between pump and laser photon and hence the heat
   generation. A slope efficiency of 60\% with respect to the absorbed pump
   power was obtained by in-well pumping at 15 degrees C. Continuous-wave
   laser operation was further demonstrated at heat sink temperatures of up
   to 55 degrees C. Both the measurement of photoluminescence and COMSOL
   simulation show that the overall heat load in the in-well pumped laser
   is smaller than in the barrier-pumped laser. These results demonstrate
   the potential of optical in-well pumping for the operation of red
   AlGaInP disk lasers if combined with means for efficient pump-light
   absorption. (C) 2015 Optical Society of America}},
  added-at = {2015-11-26T11:44:08.000+0100},
  address = {{2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA}},
  affiliation = {{Mateo, CMN (Reprint Author), Univ Stuttgart, IFSW, Pfaffenwaldring 43, D-70569 Stuttgart, Germany.
   Mateo, C. M. N.; Brauch, U.; Ahmed, M. Abdou; Graf, T., Univ Stuttgart, IFSW, D-70569 Stuttgart, Germany.
   Schwarzbaeck, T.; Kahle, H.; Jetter, M.; Michler, P., Univ Stuttgart, IHFG, D-70569 Stuttgart, Germany.
   Schwarzbaeck, T., TRUMPF Lasersyst Semicond Mfg GmbH, D-71254 Ditzingen, Germany.
   Mateo, C. M. N.; Brauch, U.; Schwarzbaeck, T.; Kahle, H.; Jetter, M.; Ahmed, M. Abdou; Michler, P.; Graf, T., Univ Stuttgart, Stuttgart Res Ctr Photon Engn SCoPE, D-70569 Stuttgart, Germany.}},
  author = {Mateo, C. M. N. and Brauch, U. and Schwarzbaeck, T. and Kahle, H. and Jetter, M. and Ahmed, M. Abdou and Michler, P. and Graf, T.},
  author-email = {{cherry-may.mateo@ifsw.uni-stuttgart.de}},
  biburl = {http://www.bibsonomy.org/bibtex/2ae386f43e8c1a4c07fcf591178af373e/droessler},
  doi = {{10.1364/OE.23.002472}},
  funding-acknowledgement = {{German Research Foundation (DFG) through the project ``Diode-pumped
   GaInP disk laser with frequency doubling into the UV region{''} {[}Br
   3606/4-1, Mi 900/24-1]; Open Access Publishing program}},
  funding-text = {{This work was financially supported by the German Research Foundation
   (DFG) through the project ``Diode-pumped GaInP disk laser with frequency
   doubling into the UV region{''}, Project Nos.: Br 3606/4-1 and Mi
   900/24-1, and the Open Access Publishing program.}},
  interhash = {141309b8994abca6771ad4d8fa3b3656},
  intrahash = {ae386f43e8c1a4c07fcf591178af373e},
  issn = {{1094-4087}},
  journal = {{OPTICS EXPRESS}},
  keywords = {imported},
  keywords-plus = {{SURFACE-EMITTING LASER; HIGH-POWER; CAVITY; OPERATION; VECSEL}},
  language = {{English}},
  month = {{FEB 9}},
  number = {{3}},
  number-of-cited-references = {{19}},
  orcid-numbers = {{Jetter, Michael/0000-0002-1311-6550}},
  pages = {{2472-2486}},
  publisher = {{OPTICAL SOC AMER}},
  research-areas = {{Optics}},
  researcherid-numbers = {{Graf, Thomas/F-2963-2012
   Jetter, Michael/I-8270-2012}},
  times-cited = {{0}},
  timestamp = {2015-11-26T11:44:08.000+0100},
  title = {{Enhanced efficiency of AlGaInP disk laser by in-well pumping}},
  type = {{Article}},
  volume = {{23}},
  web-of-science-categories = {{Optics}},
  year = {{2015}}
}
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