Two-photon photoluminescence and current images of bulk GaN and InGaN green LEDs
Resource
Lasers and Electro-Optics Society 1999 12th Annual Meeting. LEOS '99. IEEE
Journal
Lasers and Electro-Optics Society Annual Meeting-LEOS
Journal Volume
1
Pages
39-40
Date Issued
Nov-99
Date
Nov-99
Author(s)
Gan, Kian-Giap
Kao, Fu-Jen
Huang, Mao-Kuo
Wang, Yung-Shun
Mack, Michael P.
DenBaars, Steven P.
DOI
N/A
Abstract
Our recent studies shows that GaN possesses large two-photon absorption coefficients, even at infrared (IR) wavelength dose to midgap energy. This indicates that two photon confocal photoluminescence images and two-photon optical-beam-induced-current (TP-OBIC) microscopy can be applied on the GaN studies and imaging. Confocal laser scanning microscopy provides a significant improvement in axial resolution over conventional epi-fluorescence microscopy by eliminating out-of-focus fluorescence using a spatial filter in the form of a confocal aperture.
SDGs
Type
conference paper
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