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Title: Photoinduced effects in l-alanine crystals
Authors: Wojciechowski, A.
Ozga, K.
Ali H., Reshak Al-Jaary
Miedzinski, R.
Berdowski, J.
Tylczyński, Z.
Keywords: Semiorganic optical crystals;Optical absorption;l-alanine crystals
Issue Date: 30-Sep-2010
Publisher: Elsevier B.V.
Citation: Materials Letter, vol. 64(18), pages 1957-1959
Abstract: An influence of the cw laser treatment at 660 nm (red), 532 nm (green) and 405 nm (blue) wavelengths on the absorption in l-alanine crystals was studied. We have established that increasing time of illumination for red laser wavelength leads to slight changes of absorption backgrounds without changes in the spectral features. The drastic changes are observed after illumination by green laser leading to occurrence of two clear and several less clear bands correlating well with increasing illumination time. Their intensities are only slightly dependent on time of optical treatment. The remaining part of the spectra demonstrates substantially less changes. Increasing optical SHG show clear correlation with the behavior of the red laser induced absorption. The effect demonstrates slow time decay.
Description: Link to publisher's homepage at http://www.elsevier.com/
URI: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TX9-50BJNFY-3&_user=1659113&_coverDate=09%2F30%2F2010&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000054070&_version=1&_urlVersion=0&_userid=1659113&md5=8838fde37fd9789e23341d3c2ed09a6a
ISSN: 0167-577X
Appears in Collections:School of Electrical Systems Engineering (Articles)

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