Title: Ultraviolet GaN-based microdisk laser with AlN/AlGaN distributed Bragg reflector
Authors: Chen, Cheng-Chang
Shih, M. H.
Yang, Yi-Chun
Kuo, Hao-Chung
Department of Photonics
Keywords: aluminium compounds;distributed Bragg reflector lasers;finite difference time-domain analysis;gallium compounds;III-V semiconductors;laser modes;microdisc lasers;optical pumping;whispering gallery modes;wide band gap semiconductors
Issue Date: 12-Apr-2010
Abstract: We demonstrated a 4.7 mu m GaN-based microdisk laser with 25-pair AlN/AlGaN distributed Bragg reflector in ultraviolet range without undercut or deeply-etching procedures. The distributed Bragg reflector provides a high reflectivity of 85%, and selects lasing mode around 375 nm wavelength. Under optical pumping conditions, the lasing action was observed with a low threshold power density of 0.03 kW/cm(2). We also characterized the whispering gallery mode profiles of the microdisk with finite-different time-domain simulation.
URI: http://dx.doi.org/10.1063/1.3399781
ISSN: 0003-6951
DOI: 10.1063/1.3399781
Volume: 96
Issue: 15
End Page: 
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