TY - JOUR
T1 - Optical characterization of ZnO microsphere produced by laser ablation in air
AU - Nakamura, Daisuke
AU - Tetsuyama, Norihiro
AU - Shimogaki, Tetsuya
AU - Sato, Yuta
AU - Mizokami, Yasuaki
AU - Higashihata, Mitsuhiro
AU - Okada, Tatsuo
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2015
Y1 - 2015
N2 - We have succeeded in growing the ZnO microspheres by a simple laser ablation in the air, and we have obtained UV whispering-gallery-mode (WGM) lasing from the sphere under pulsed laser excitation. In this study, we observed resonances of WGM in visible region under cw laser pumping. In addition, possible refractive index of the ZnO microsphere was estimated from the WGM peaks. Furthermore, we obtained room-temperature electroluminescence from the ZnO microsphere/p-GaN heterojunction under forward bias.
AB - We have succeeded in growing the ZnO microspheres by a simple laser ablation in the air, and we have obtained UV whispering-gallery-mode (WGM) lasing from the sphere under pulsed laser excitation. In this study, we observed resonances of WGM in visible region under cw laser pumping. In addition, possible refractive index of the ZnO microsphere was estimated from the WGM peaks. Furthermore, we obtained room-temperature electroluminescence from the ZnO microsphere/p-GaN heterojunction under forward bias.
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U2 - 10.2961/jlmn.2015.02.0010
DO - 10.2961/jlmn.2015.02.0010
M3 - Article
AN - SCOPUS:84929299331
SN - 1880-0688
VL - 10
SP - 162
EP - 165
JO - Journal of Laser Micro Nanoengineering
JF - Journal of Laser Micro Nanoengineering
IS - 2
ER -