NDLI: The role of phase-matching and nanocrystal-size effects in three-wave mixing and CARS processes in porous gallium phosphide

Content Provider	Springer Nature Link
Author	Golovan, L.A. Petrov, G.I. Fang, G.Y. Melnikov, V.A. Gavrilov, S.A. Zheltikov, A.M. Timoshenko, V.Y. Kashkarov, P.K. Yakovlev, V.V. Li, C.F.
Copyright Year	2006
Abstract	Nonlinear-optical interactions, such as second-harmonic and sum-frequency generation and coherent anti-Stokes Raman spectroscopy (CARS), are investigated in porous GaP for the first time by means of a novel laser source based on mode-locked picosecond Nd3+:YVO4 laser and subsequent continuum generation in an optical fiber. The efficiency of the former two nonlinear optical processes is shown to be strongly dependent on the wavelengths of the interacting waves and tends to increase with the decrease of the excitation wavelength. The power of the generated second-harmonic and sum-frequency increases by a factor of 2 and 30, respectively, compared to the crystalline GaP. In contrast, the CARS signal in porous GaP is found to be less efficient than one in crystalline GaP. The observed results are explained in terms of competition of the phase-matching effects in GaP nanocrystals and the enhanced photon lifetime in scattering porous GaP layers.
Starting Page	303
Ending Page	308
Page Count	6
File Format	PDF
ISSN	09462171
Journal	Applied Physics B
Volume Number	84
Issue Number	1-2
e-ISSN	14320649
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-05-18
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physics and Applied Physics in Engineering Optical Spectroscopy, Ultrafast Optics Quantum Optics, Quantum Electronics, Nonlinear Optics Laser Technology and Physics, Photonics Physical Chemistry Electromagnetism, Optics and Lasers
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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