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Date: 14-3-2016
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Date: 11-4-2016
1423
Date: 23-3-2016
1517
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Vanadates
Nd3+-doped yttrium orthovanadate (YVO4) has shown a relatively low threshold at pulsed operation. However, early studies of this crystal were hampered by severe crystal growth problems, and as a result YVO4 was discarded as a host.With the emergence of diode pumping, Nd :YVO4 has become an important solid-state laser material, because it has very attractive features, such as a large stimulated emission cross section and a high absorption of the pump wavelength, and the growth problem has been overcome for the small crystals required with this pump source.
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دراسة تحدد أفضل 4 وجبات صحية.. وأخطرها
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استمرار توافد مختلف الشخصيات والوفود لتهنئة الأمين العام للعتبة العباسية بمناسبة إعادة تعيينه
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