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HEAT TREATMENT AND OPTICAL SPECTROSCOPY OF CR4+:GGG FOR PASSIVELY Q-SWITCHING ND:GARNET LASERS
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نویسنده
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Mohamed S. ,Jamal S. ,Zafer M. ,Yassin Sh. M.
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منبع
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iranian journal of materials science and engineering - 2014 - دوره : 11 - شماره : 2 - صفحه:79 -86
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چکیده
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High quality ggg:cr,ca crystal for passive q-switching nd:garnet lasers has been grown by theczochralski method. thermal treatment of ggg crystals co-doped with cr4+ and ca2+ at different temperatures isinvestigated. the absorption spectra were resolved into different peaks, of modified gaussian line-shape. transitionfrom octahedral sites to tetrahedral ones is thermally activated. an optimal temperature interval for this transition wasfound to be 1200-1300 ?c. the investigated samples were used as saturable absorbers in flash-lamp pumped nd:yaglaser, and a pulse width of about 16 nsec was obtained.
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کلیدواژه
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Cr ,Ca:GGG ,Czochralski method ,Passive Q-switch ,Saturable absorber
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آدرس
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Higher Institute for Applied Science and Technology, Damascus, Syria., Syria, Higher Institute for Applied Science and Technology, Damascus, Syria., Syria, Higher Institute for Applied Science and Technology, Damascus, Syria., Syria, Higher Institute for Applied Science and Technology, Damascus, Syria., Syria
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Authors
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