M. Laurito

Elettra-Sincrotrone Trieste S.C.p.A.

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M. B. Danailov

Elettra-Sincrotrone Trieste S.C.p.A.

Alessandro Pecchia

Institute of Structure of Matter

P. Apai

The Abdus Salam International Centre for Theoretical Physics (ICTP)

Cooperative Institutions

Elettra-Sincrotrone Trieste S.C.p.A.

Consorzio Roma Ricerche

Institute of Structure of Matter

The Abdus Salam International Centre for Theoretical Physics (ICTP)

Institute for Solid State Physics and Optics

Hungarian Academy of Sciences

Institute for Technical Physics and Materials Science

Institute for Physics

University of Arizona

Bulgarian Academy of Sciences

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Studies of two-wave mixing of very broad-spectrum laser light in BaTiO_3

Journal of the Optical Society of America B (1999)

Alessandro Pecchia M. Laurito P. Apai M. B. Danailov

We present theoretical and experimental studies of the process of two-wave mixing of broadband radiation in BaTiO3. We show that the energy exchange in such a process can be calculated on the basis of a system of coupled-wave equations in which phase-mismatch diffraction processes are taken into account. Good agreement of the model predictions and measurements performed with a variable-bandwidth Ti:sapphire laser is reported. Reasonable amplification of light with a FWHM spectrum of as much as 10 nm is reported in a standard copropagation scheme; above this value a considerable gain decrease and significant spatial profile changes occur.

Four-wave mixing

10.1364/josab.16.000917

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Citations (10)

Broad Spectrum Two-Wave Mixing in BaTiO/sub 3/

M. B. Danailov Alessandro Pecchia M. Laurito P. Apai

10.1109/cleoe.1998.719295

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Optimum signal polarization in two-wave mixing with incoherent erasure of the fanning process

Journal of Modern Optics (1998)

M. B. Danailov M. Laurito Alessandro Pecchia

Abstract We present a study of the optimum polarization states of the pump and signal beams in two-wave mixing amplification using BaTiO3 where the main objective is to improve the performance by reduction of the beam fanning. We demonstrate numerically and experimentally that at low (less than 50) pump-to-signal ratios it is advantageous to use both pump and signal in mixed polarization states with respect to the principal plane of the crystal.

Erasure

Four-wave mixing

SIGNAL (programming language)

Signal beam

10.1080/09500349808231243

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Broad Spectrum Two-Wave Mixing in BaTiO3

Conference on Lasers and Electro-Optics Europe (1998)

M. B. Danailov Alessandro Pecchia M. Laurito P. Apai

Two-wave mixing (TWM) in photorefractive crystals has been widely studied in the last decade and many potential applications have been demonstrated. As a rule, narrowband lasers with large coherence length have been utilised. To our knowledge, in the literature there is practically no data on the performance of TWM when lasers with spectral width of several nm or more are used.

Narrowband

Four-wave mixing

Electromagnetic spectrum

10.1364/cleo_europe.1998.cwk5

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