Special Section on Optical Refrigeration and Radiation-Balanced Lasers

Determination of external quantum efficiency in semiconductors using pulsed power-dependent photoluminescence

[+] Author Affiliations
Chengao Wang, Mansoor Sheik-Bahae

University of New Mexico, Department of Physics and Astronomy, Optical Science and Engineering Program, 1919 Lomas Boulevard Northeast, Albuquerque, New Mexico 87131, United States

Opt. Eng. 56(1), 011106 (Oct 05, 2016). doi:10.1117/1.OE.56.1.011106
History: Received July 5, 2016; Accepted September 13, 2016
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Abstract.  External quantum efficiency (EQE) is a parameter widely used in various photonic devices. In laser refrigeration of solids, materials with high EQE are essential for achieving net cooling. Pulsed power-dependent photoluminescence measurement is developed and demonstrated to be a rapid and efficient tool to determine the EQE and screen the sample quality before the fabrication process for the application of laser cooling in semiconductors. EQE values obtained from this technique are shown to be consistent with results from other more precise, but time-consuming measurements for various samples at different temperatures.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Chengao Wang and Mansoor Sheik-Bahae
"Determination of external quantum efficiency in semiconductors using pulsed power-dependent photoluminescence", Opt. Eng. 56(1), 011106 (Oct 05, 2016). ; http://dx.doi.org/10.1117/1.OE.56.1.011106


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