TY - JOUR
T1 - Near-field optical imaging of light localization in GaN nanocolumn system
AU - Sakai, Masaru
AU - Inose, Yuta
AU - Ohtsuki, Tomi
AU - Ema, Kazuhiro
AU - Kishino, Katsumi
AU - Saiki, Toshiharu
PY - 2014/3
Y1 - 2014/3
N2 - The first near-field optical imaging of light localization in a GaN nanocolumn system was performed. The sample used was a randomly arranged GaN nanocolumn with high aspect ratio. We attached an InGaN single quantum well at the apex of each GaN nanocolumn as an illuminant antenna and observed luminescence from the illuminant using an aperture-type scanning near-field optical microscope. By this technique, we directly obtained optical images of luminescence and its spatial distribution for the GaN nanocolumn system. These images, along with histogram analysis, excitation wavelength dependence, and numerical calculations, offer evidence of Anderson localization of light.
AB - The first near-field optical imaging of light localization in a GaN nanocolumn system was performed. The sample used was a randomly arranged GaN nanocolumn with high aspect ratio. We attached an InGaN single quantum well at the apex of each GaN nanocolumn as an illuminant antenna and observed luminescence from the illuminant using an aperture-type scanning near-field optical microscope. By this technique, we directly obtained optical images of luminescence and its spatial distribution for the GaN nanocolumn system. These images, along with histogram analysis, excitation wavelength dependence, and numerical calculations, offer evidence of Anderson localization of light.
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U2 - 10.7567/JJAP.53.030301
DO - 10.7567/JJAP.53.030301
M3 - Article
AN - SCOPUS:84903155532
SN - 0021-4922
VL - 53
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
IS - 3
M1 - 030301
ER -