WHISPERING GALLERY MODE LASERS IN ERBIUM/YTTERBIUM CODOPED PHOSPHATE GLASSES

Tran Thi Tam (Faculty of Engineering Physics and Nano-Technology, College of Technology, E3 144 Xuan Thuy Rd., Cau Giay, Hanoi)
Dang Quoc Trung (Institute of Materials Science, 18 Hoang Quoc Viet Rd., Cau Giay, Hanoi)
Le Huu Minh (Institute of Materials Science, 18 Hoang Quoc Viet Rd., Cau Giay, Hanoi)
Tran Anh Vu (Institute of Materials Science, 18 Hoang Quoc Viet Rd., Cau Giay, Hanoi)
Do Ngoc Chung (Institute of Materials Science, 18 Hoang Quoc Viet Rd., Cau Giay, Hanoi)
Patrice Feron (GIS ”FOTON” Laboratoire d’Optronique (CNRS-UMR 6082) ENSSAT 6 rue de Kerampont, 22300 Lannion)

ASEAN Journal on Science and Technology for Development
Vol. 24 No. 1-2 (2007): ASEAN Journal on Science and Technology for Development (AJSTD)

The study of whispering gallery mode laser in Er3+/Yb3+ co-doped phosphate glass microsphere has been reported. The coupling was carried out by fiber half taper technique. The microsphere lasers have been studied under pumping at 980 nm, to take full advantage of energy transfer effect from ion Ytterbium to ion Erbium. The observed lasing range extends from 1533 nm to 1612 nm.