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

Xingsheng Xu, Shiyoshi Yokoyama

Research output: Contribution to journalArticlepeer-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 languageEnglish
Article number251105
JournalApplied Physics Letters
Volume99
Issue number25
DOIs
Publication statusPublished - Dec 19 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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