JWATowards Applications Joint Poster Session—Continued

4 Hamamatsu Photonics K. K., Japan; 5 Shin- Etsu Quartz Products Co., Ltd., Japan. We present a laser oscillation in the shortest Nd-doped silica fiber, an only 4-mm multimode Nd-doped silica fiber. This fiber-core glass was fabricated by the zeolite method, and the glass contained 1.25 wt% of Nd 2O3. 1 , Takenobu