Og. Okhotnikov et Jm. Sousa, HIGH-POWER SUPERFLUORESCENT SOURCE WITH STABLE SINGLE-TRANSVERSE-MODEOUTPUT USING A MULTIMODE ER-DOPED FIBER, Electronics Letters, 33(20), 1997, pp. 1727-1728
A high power superfluorescent Er-doped fibre source with an environmen
t-insensitive single-transverse-mode output is demonstrated using mult
imode fibre. The efficient fundamental mode selection is explained by
strong ground state absorption. The fibre deliver up to similar or equ
al to 770 mW of output power with the highest conversion efficiency of
58%.