Study on light emitting modes of InGaP microdisks by using scanning near-field optical microscopy

Using scanning near-field optical microscopy, the photoluminescence of InGaP microdisks with a radius of 5 ??m and 10 ??m respectively was acquired. Compared with far-field fluorescence images which show a bright red emission of fluorescence around the circumference of the microdisks, the near-field fluorescence images contain much more details of the mode structure of the light distribution. The main characteristics were found to be whispering-gallery mode from both the near-field and far-field images.SCI(E)EI中文核心期刊要目总览(PKU)中国科学引文数据库(CSCD)03219-2241