TY - JOUR
T1 - Ultraviolet whispering-gallery-mode lasing in ZnO micro/nano sphere crystal
AU - Okazaki, Kota
AU - Shimogaki, Tetsuya
AU - Fusazaki, Koshi
AU - Higashihata, Mitsuhiro
AU - Nakamura, Daisuke
AU - Koshizaki, Naoto
AU - Okada, Tatsuo
N1 - Funding Information:
The measurements of XRD and micro-Raman analyses were performed at the Center of Advanced Instrumental Analysis, Kyushu University. A part of this work was supported by a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS, No. 24656053), and Special Coordination Funds for Promoting Science and Technology from Japan Science and Technology Agency are also acknowledged.
PY - 2012/11/19
Y1 - 2012/11/19
N2 - We report ultraviolet (UV) whispering-gallery-mode (WGM) lasing in a zinc oxide (ZnO) micro/nanosphere crystal fabricated by simply ablating a ZnO sintered target, which was much more productive method without any time-consuming crystal-growth process. The lasing spectral mode spacing was controlled by changing the diameters, and single-mode lasing was realized from a ZnO nanosphere. Experimental results were in good agreement with predictions from WGM theories. Since the ZnO sphere can operate as an active WGM refractometric sensor for small molecules in UV region, high sensitivity enhanced by high quality factor, refractive index, and wavelength dispersion can be expected.
AB - We report ultraviolet (UV) whispering-gallery-mode (WGM) lasing in a zinc oxide (ZnO) micro/nanosphere crystal fabricated by simply ablating a ZnO sintered target, which was much more productive method without any time-consuming crystal-growth process. The lasing spectral mode spacing was controlled by changing the diameters, and single-mode lasing was realized from a ZnO nanosphere. Experimental results were in good agreement with predictions from WGM theories. Since the ZnO sphere can operate as an active WGM refractometric sensor for small molecules in UV region, high sensitivity enhanced by high quality factor, refractive index, and wavelength dispersion can be expected.
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U2 - 10.1063/1.4768696
DO - 10.1063/1.4768696
M3 - Article
AN - SCOPUS:84870007773
SN - 0003-6951
VL - 101
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 21
M1 - 211105
ER -