التفاصيل البيبلوغرافية
| العنوان: |
Charge transfer processes and ultraviolet induced absorption in Yb:YAG single crystal laser materials. |
| المؤلفون: |
Rydberg, S., Engholm, M. |
| المصدر: |
Journal of Applied Physics; Jun2013, Vol. 113 Issue 22, p223510, 6p, 1 Chart, 8 Graphs |
| مصطلحات موضوعية: |
CHARGE transfer, CRYSTALS, ENERGY transfer, LASERS, OPTICAL materials, FIBER lasers |
| مستخلص: |
Charge transfer (CT) transitions and UV induced color centers in Yb:YAG single crystals have been investigated. A simultaneous pair formation of a stable Yb2+ ion and a hole related (O-) color center (hole polaron) are observed through a CT-process. Slightly different types of hole related color centers are formed in Yb:YAG crystals containing small levels of iron impurities. Furthermore, excitation spectroscopy on the UV irradiated Yb:YAG samples could confirm an energy transfer process between Yb3+ and Yb2+ ions. The findings are important for an increased knowledge of the physical loss mechanisms observed in Yb-doped laser materials, such as the nonlinear decay process in Yb:YAG crystals as well as the photodarkening phenomenon in Yb-doped fiber lasers. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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