Ultraviolet induced absorption and Bragg grating inscription in RbCdF{sub 3}:Mn{sup 2+}
- MacDiarmid Institute, Industrial Research, P.O. Box 31310, Lower Hutt (New Zealand)
The effects of ultraviolet (UV) irradiation on the optical absorption, optically stimulated luminescence (OSL), and thermoluminescence (TL) properties of RbCdF{sub 3}:Mn{sup 2+} are reported. There is a UV induced optical absorption at {approx}4 eV, together with OSL and TL that are attributed to a distribution of carrier traps, as well as isolated or disconnected traps. We show that the time-integrated OSL for samples with different Mn{sup 2+} concentrations is correlated with the UV-induced change in the absorption coefficient, which we attribute to a higher trap concentration in samples with high Mn{sup 2+} concentrations. The UV-induced changes in the optical properties can be completely bleached, which leads to the possibility of holographic storage. We show that stable and rewritable thick Bragg gratings can be made in RbCdF{sub 3}:Mn{sup 2+} single crystals after UV irradiation at 254 nm where the gratings were made by two beam interference at 364 nm.
- OSTI ID:
- 21064460
- Journal Information:
- Journal of Applied Physics, Vol. 102, Issue 11; Other Information: DOI: 10.1063/1.2821147; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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