Light-controlled erasure of induced χ(2) in thermally poled glasses
FREYSZ, E.
Centre de physique moléculaire optique et hertzienne [CPMOH]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
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Centre de physique moléculaire optique et hertzienne [CPMOH]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
FREYSZ, E.
Centre de physique moléculaire optique et hertzienne [CPMOH]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
< Reduce
Centre de physique moléculaire optique et hertzienne [CPMOH]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Language
en
Article de revue
This item was published in
Applied Physics Letters. 1999, vol. 74, n° 18, p. 2623-2625
American Institute of Physics
English Abstract
We demonstrate that the induced second order nonlinearity χ(2) generated in thermal poled doped borosilicate glasses can be erased by a prolonged exposure to near IR laser radiation. The evolution of the second harmonic ...Read more >
We demonstrate that the induced second order nonlinearity χ(2) generated in thermal poled doped borosilicate glasses can be erased by a prolonged exposure to near IR laser radiation. The evolution of the second harmonic signal with respect to laser time exposure, intensity and wavelength is reported. The IR laser radiation induced relaxation of the χ(2) is mainly related to two-photon absorption of the glass. The nonexponential time dependence of the second harmonic signal agrees with a simple model involving diffusion of photoexcited carriers. The reversible erasure process is also observed when the sample is exposed to near ultraviolet laser radiation.Read less <
Origin
Hal imported