T. Usami

Temporal Change of Thermal Lens Effects on Highly Pumped Ytterbium Glass by Wavefront Measurement

A. Nishimura, Katsuaki Akaoka, A. Ohzu, 2001 .

Improved cooling performance of ytterbium-doped glass combined with sapphire

A. Nishimura, A. Sugiyama, T. Usami, 2003 .