Nonlinear behavior of photoluminescence from silicon particles under two-photon excitation

Xingsheng Xu; Shiyoshi Yokoyama

doi:10.1063/1.3665042

Nonlinear behavior of photoluminescence from silicon particles under two-photon excitation

Xingsheng Xu, Shiyoshi Yokoyama

Department of Advanced Device Materials

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Two-photon excited fluorescence (TPEF) under continuous-wave excitation from silicon particles produced by a pulsed laser is investigated. Spectra and images of TPEF from silicon particles are studied under different excitation intensities and operation modes (continuous wave or pulse). It is found that the photoluminescence depends superlinearly on the excitation intensity and that the spectral shape and peaks vary with different silicon particles. The above phenomena show the nonlinear behavior of TPEF from silicon particles, and stimulated emission is a possible process.

Original language	English
Article number	251105
Journal	Applied Physics Letters
Volume	99
Issue number	25
DOIs	https://doi.org/10.1063/1.3665042
Publication status	Published - Dec 19 2011

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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abstract = "Two-photon excited fluorescence (TPEF) under continuous-wave excitation from silicon particles produced by a pulsed laser is investigated. Spectra and images of TPEF from silicon particles are studied under different excitation intensities and operation modes (continuous wave or pulse). It is found that the photoluminescence depends superlinearly on the excitation intensity and that the spectral shape and peaks vary with different silicon particles. The above phenomena show the nonlinear behavior of TPEF from silicon particles, and stimulated emission is a possible process.",

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AB - Two-photon excited fluorescence (TPEF) under continuous-wave excitation from silicon particles produced by a pulsed laser is investigated. Spectra and images of TPEF from silicon particles are studied under different excitation intensities and operation modes (continuous wave or pulse). It is found that the photoluminescence depends superlinearly on the excitation intensity and that the spectral shape and peaks vary with different silicon particles. The above phenomena show the nonlinear behavior of TPEF from silicon particles, and stimulated emission is a possible process.

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