HARIHARA VENKATARAMAN, B.; SYAM PRASAD, N.; VARMA, K. B. R.; RODRIGUEZ, Vincent; MAGLIONE, Mario; VON DER MÜHLL, Régnault; ETOURNEAU, Jean

doi:10.1063/1.2037198

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HARIHARA VENKATARAMAN, B.
Materials Research Centre

SYAM PRASAD, N.
Materials Research Centre

VARMA, K. B. R.
Materials Research Centre

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Applied Physics Letters. 2005, vol. vol. 87, n° 9, p. p. 091113 (3 p.)

American Institute of Physics

Résumé en anglais

The nanocrystallites (~ 3nm) of LiNbO3, evolved in the (100–x)LiBO2-xNb2O5 (5 < x < 20, in molar ratio) glass system exhibited intense second-harmonic signals in transmission mode when exposed to infrared (IR) light at g =1064 nm. The second-harmonic waves were found to undergo optical diffraction which was attributed to the presence of self-organized submicrometer-sized LiNbO3 crystallites that were grown within the glass matrix along the parallel damage fringes created by the IR laser radiation. Micro-Raman studies carried out on the laser-irradiated samples confirmed the self-organized crystallites to be LiNbO3.< Réduire

Mots clés en anglais

Nanocrystals and nanoparticles

Frequency conversion

harmonic generation

including higher-order harmonic generation

Glasses

quartz

Nonmetallic inorganics

Ultraviolet

visible

and infrared radiation effects

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Optical diffraction of second-harmonic signals in the LiBO2-Nb2O5 glasses induced by self-organized LiNbO3 crystallites

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