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Proceedings Paper

Study of whispering-gallery mode of InGaP microdisks using scanning near-field optical microscopy
Author(s): Xing Zhu; Yu Zhang; Yongchun Xin; Yong Ling; Ke Wu; Hetian Zhou; Yan Yin; Bei-Wei Zhang; Zizhao Gan; Feijun Song; Yu Wang
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Paper 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.

Paper Details

Date Published: 13 October 1998
PDF: 10 pages
Proc. SPIE 3467, Far- and Near-Field Optics: Physics and Information Processing, (13 October 1998); doi: 10.1117/12.326823
Show Author Affiliations
Xing Zhu, Peking Univ. (China)
Yu Zhang, Peking Univ. (China)
Yongchun Xin, Peking Univ. (China)
Yong Ling, Peking Univ. (China)
Ke Wu, Peking Univ. (China)
Hetian Zhou, Peking Univ. (China)
Yan Yin, Peking Univ. (China)
Bei-Wei Zhang, Peking Univ. (China)
Zizhao Gan, Peking Univ. (China)
Feijun Song, China Da Heng Corp. (China)
Yu Wang, China Da Heng Corp. (China)

Published in SPIE Proceedings Vol. 3467:
Far- and Near-Field Optics: Physics and Information Processing
Suganda Jutamulia; Toshimitsu Asakura, Editor(s)

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