Abstract
We have investigated the spectroscopic properties of the emission from the transition of ions in fluoride glasses for use in U-band fiber amplifiers. The intensity profile of the emission peaks at , with a full width at half-maximum of . The measured lifetime and emission cross section are and , respectively. Frequency upconversion to the state occurs simultaneously with excitation of the emission, so the shorter-wavelength side of the absorption spectrum is favorable for population of the state. Codoping with rare earths such as , , , and decreases the lifetimes of the lower-lying and levels and as a result would be of benefit in achieving population inversion between the fluorescing level and the lower-lying levels.
© 2003 Optical Society of America
Full Article | PDF ArticleMore Like This
Setsuhisa Tanabe, Xian Feng, and Teiichi Hanada
Opt. Lett. 25(11) 817-819 (2000)
Ya-Pei Peng, Yanyan Guo, Junjie Zhang, and Long Zhang
Appl. Opt. 53(8) 1564-1569 (2014)
Stuart D. Jackson
Opt. Lett. 29(4) 334-336 (2004)