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

Journal Article · Mon Dec 19 00:00:00 EST 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3665042· OSTI ID:22027847

Xingsheng, Xu ^[1]; Yokoyama, Shiyoshi ^[2]

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1. State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 (China)
2. Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga-city, Fukuoka 816-8580 (Japan)

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.

• OSTI ID: 22027847
• Journal Information: Applied Physics Letters, Vol. 99, Issue 25; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
EXCITATION
FLUORESCENCE
MULTI-PHOTON PROCESSES
NANOSTRUCTURES
NONLINEAR PROBLEMS
OPERATION
PARTICLES
PHOTOLUMINESCENCE
PHOTONS
PULSED IRRADIATION
SEMICONDUCTOR MATERIALS
SILICON
STIMULATED EMISSION