Vladimirov D.A., Mandel V.E., Popov A.Yu., Tyurin A.V.
The compensating influence of cationic (Ca++ ions) and anionic (OH– ions) impurities doped into additively coloured potassium chloride crystal on the process of photothermal conversion of F-centres is detected. “Brightening” in the absorption band of the F-centres is revealed that achieves 90%. It is not accompanied by the appearance of centres absorbing in the visible range. Double vacancies and the complexes Ca++(OH–)2-cationic vacancy are shown to be responsible for this phenomenon. Basing on those results, a new system for holographic recording is suggested that uses the compensating effect of cationic and anionic impurities .
Key words: volume holograms, KCl crystals, cationic impurities, anionic impurities
doi 10.3116/16091833/5/4/131/2004
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