- Preventing photodarkening in ytterbium-doped high power fiber lasers; correlation to the UV-transparency of the core glassM Engholm
Department of Information, Technology and Media, Physical Electronics and Photonics, Mid Sweden University, SE 851 70 Sundsvall, Sweden
Opt Express 16:1260-8. 2008..Very low levels of photodarkening is observed for the ytterbium doped phosphosilicate glass composition under 915nm high power diode pumping. Possible excitation routes to reach the CT-absorption band under 915nm pumping are discussed...