We report the observation of amplified spontaneous emission in the 3H4 → 3H6 transition of Tm+3 in a Ta2O5-doped multicomponent silicate fiber. The evolutions of the spectral shape, output power, and center wavelength were measured as a function of fiber length and pump power in the previously unstudied high-power range, where saturation effects dominate. An output power of 1 mW has been achieved at 1.91 μm with a bandwidth of 77 nm.
© 1994 Optical Society of America
Original Manuscript: November 23, 1993
Published: August 1, 1994
Kyunghwan Oh, Arnd Kilian, P. M. Weber, L. Reinhart, Qin Zhang, and T. F. Morse, "Broadband superfluorescent emission of the 3H4 → 3H6 transition in a Tm-doped multicomponent silicate fiber," Opt. Lett. 19, 1131-1133 (1994)