Ramesh, P and Hegde, Vinod and Keshavamurthy, K and Pramod, A G and Jagannath, G and Aloraini, Dalal Abdullah and Almuqrin, Aljawhara H and Sayyed, M I and Harisha, K S and Khan, Sultan and Annapurna, K and Rao, S Venugopal and Kokila, M K (2021) Influence of gamma irradiation on photoluminescence and nonlinear optical properties of Eu3+ activated heavy metal borate glasses. Optical Materials , 116. Art No-111102. ISSN 0925-3467

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Abstract

Gamma irradiation effect on absorption, photoluminescence (PL), and nonlinear optical (NLO) features of Eu3+ doped heavy metal borate glasses was studied and elucidated in detail. With blue light excitation, the emission intensity of Eu3+ doped glass was monitored with respect to irradiated dose. The PL intensity of the glasses was reduced with a raise in gamma dose rate because of the formation of colour centres. The quality of the emission colour of the pre- and post-irradiated glasses was analysed using 1931 CIE system. The Nonlinear Optical (NLO) features were examined by the Z-scan technique in the near-infrared spectral region and using femtosecond pulse excitation. The NLO attributes were enhanced with increase gamma irradiation dose. These enhancements are ascribed to the development of defects and non-bridging oxygens when irradiated with gamma radiation. The enhancement of NLO coefficients with gamma irradiation dose suggest the high dose irradiated glasses are useful for photonic device applications, particularly for optical limiters.

Item Type:	Article
Subjects:	Glass
Divisions:	Glass
Depositing User:	Bidhan Chaudhuri
Date Deposited:	16 Dec 2021 12:21
Last Modified:	16 Dec 2021 12:21
URI:	http://cgcri.csircentral.net/id/eprint/5253

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