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Date: 17-3-2016
1435
Date: 22-3-2016
2235
Date: 26-12-2016
1911
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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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لصحة القلب والأمعاء.. 8 أطعمة لا غنى عنها
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حل سحري لخلايا البيروفسكايت الشمسية.. يرفع كفاءتها إلى 26%
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في مدينة الهرمل اللبنانية.. وفد العتبة الحسينية المقدسة يستمر بإغاثة العوائل السورية المنكوبة
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