Study of whispering-gallery mode of InGaP microdisks using scanning near-field optical microscopy

Xing Zhu; Yu Zhang; Yongchun Xin; Yong Ling; Ke Wu; Hetian Zhou; Yan Yin; Bei-Wei Zhang; Zizhao Gan; Feijun Song; Yu Wang

doi:10.1117/12.326823

13 October 1998 Study of whispering-gallery mode of InGaP microdisks using scanning near-field optical microscopy

Xing Zhu, Yu Zhang, Yongchun Xin, Yong Ling, Ke Wu, Hetian Zhou, Yan Yin, Bei-Wei Zhang, Zizhao Gan, Feijun Song, Yu Wang

Author Affiliations +

Proceedings Volume 3467, Far- and Near-Field Optics: Physics and Information Processing; (1998) https://doi.org/10.1117/12.326823
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Microcavity shows the growing importance of the intensity enhancement, inhibition nd spectral narrowing of spontaneous emission. The advantages of microcavity lasers are the very low threshold and small size. We have fabricated InGaP microdisks with radius of about 5 micrometers . The photoluminescence of our InGaP microdisks in far-field and near-field observation are compared. A strong enhancement of the photoluminescence intensity in the microdisks with respect to that of the un-patterned sample of the same epitaxial wafer is obtained. Far-field fluorescence imaging shows a bright red emission of fluorescence around the circumference of the microdisk. Simultaneous acquisition of near-field image and topography gives the correlation of the sample surface and light distribution. The optical disk mode pattern in our InGaP microdisks can be interpreted as whispering-gallery mode and the mixture of other modes.

Citation Download Citation

Xing Zhu, Yu Zhang, Yongchun Xin, Yong Ling, Ke Wu, Hetian Zhou, Yan Yin, Bei-Wei Zhang, Zizhao Gan, Feijun Song, and Yu Wang "Study of whispering-gallery mode of InGaP microdisks using scanning near-field optical microscopy", Proc. SPIE 3467, Far- and Near-Field Optics: Physics and Information Processing, (13 October 1998); https://doi.org/10.1117/12.326823

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