TY - GEN
T1 - Fabrication and bandgap engineering of doped ZnO microspheres by simple laser ablation in air
AU - Nakamura, Daisuke
AU - Shimogaki, Tetsuya
AU - Tanaka, Toshinobu
AU - Nagasaki, Fumiaki
AU - Fujiwara, Yuki
AU - Higashihata, Mitsuhiro
AU - Ikenoue, Hiroshi
AU - Okada, Tatsuo
N1 - Publisher Copyright:
Copyright © 2016 SPIE.
PY - 2016
Y1 - 2016
N2 - We synthesized magnesium (Mg)-doped ZnO microspheres by laser ablation of a ZnO sintered target containing magnesium oxide (MgO) with the fundamental of a Nd:YAG laser at 1064 nm. The well-spherical ZnO microcrystals with diameters of 1-20 μm were collected on a substrate which was put near the ablation spot. X-ray diffraction and micro-Raman spectrum indicate that the ZnO microspheres have a crystalline structure. Room-temperature photoluminescence properties of the microsphere were investigated under third harmonic generation of a Nd:YAG laser excitation at 355 nm. An ultraviolet (UV) lasing in whispering gallery mode (WGM) and blue-shift of the UV WGM peaks were observed from the Mg-doped ZnO microsphere.
AB - We synthesized magnesium (Mg)-doped ZnO microspheres by laser ablation of a ZnO sintered target containing magnesium oxide (MgO) with the fundamental of a Nd:YAG laser at 1064 nm. The well-spherical ZnO microcrystals with diameters of 1-20 μm were collected on a substrate which was put near the ablation spot. X-ray diffraction and micro-Raman spectrum indicate that the ZnO microspheres have a crystalline structure. Room-temperature photoluminescence properties of the microsphere were investigated under third harmonic generation of a Nd:YAG laser excitation at 355 nm. An ultraviolet (UV) lasing in whispering gallery mode (WGM) and blue-shift of the UV WGM peaks were observed from the Mg-doped ZnO microsphere.
UR - https://www.scopus.com/pages/publications/84981166221
UR - https://www.scopus.com/pages/publications/84981166221#tab=citedBy
U2 - 10.1117/12.2214054
DO - 10.1117/12.2214054
M3 - Conference contribution
AN - SCOPUS:84981166221
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXI
A2 - Neuenschwander, Beat
A2 - Roth, Stephan
A2 - Grigoropoulos, Costas P.
A2 - Makimura, Tetsuya
PB - SPIE
T2 - Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXI
Y2 - 15 February 2016 through 18 February 2016
ER -