"Triggering" effect of second harmonic generation in centrosymmetric alpha-BaB2O4 crystals

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12640%2F09%3A00010062" target="_blank" >RIV/60076658:12640/09:00010062 - isvavai.cz</a>

Alternative codes found

RIV/67179843:_____/09:00343179

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

"Triggering" effect of second harmonic generation in centrosymmetric alpha-BaB2O4 crystals

Original language description

We have discovered an occurrence of optical second harmonic generation at 1064 nm fundamental wavelength for the alpha-BaB2O4 (ABO) crystal illuminated by 7 ns nanosecond nitrogen laser of 337 nm. The effect is observed only during illumination and achieves the maximum SHG output after 15-20 min of treatment. After switching off of the UV laser treatment the SHG decreases during about 5 min. The maximum second order susceptibility achieved was equal to about 2.1 pm/V at 1064 min after about 20 min of UVlaser treatment. The observed SHG is explained by local photothermal heating of the crystals and photo stimulated photothermal anisotropy that favors an occurrence non-centrosymmetry of the local charge density. An additional investigations of the low-power (cw) He-Ne laser light indicate the absence of additional light scattering, which unambiguously indicates an absence of any additional microcrystalline states including non-cenrosymmetrical beta-BaB2O4 phases. Probably photostimulate

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BO - Biophysics

OECD FORD branch

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Project

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Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2009

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Optical Materials

ISSN

0925-3467

e-ISSN

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Volume of the periodical

31

Issue of the periodical within the volume

4

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

3

Pages from-to

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UT code for WoS article

000263632400017

EID of the result in the Scopus database

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