Upconversion studies in Tm, Ho co-doped alumino-zirco-fluoride glass

Author

Doshida, M. ; Teraguchi, Kazunari ; Obara, Minoru ; Ota, Kei ; Saito, Hideaki

Author_Institution

Dept. of Electr. Eng., Keio Univ., Yokohama, Japan

Volume

2

fYear

1994

fDate

31 Oct-3 Nov 1994

Firstpage

427

Abstract

Tm, Ho co-doped alumino-zirco-fluoride (AZF) glass is an attractive candidate for an optical pre-amplifier around two microns. In Tm, Ho doped materials, however, upconversion from the upper laser levels of Tm ³F₄ and Ho ⁵I₇ occurs which reduces the gain coefficient and efficiency. Therefore it is important to determine the upconversion rate constants in order to estimate optimum performance of such a Tm, Ho: AZF glass pre-amplifier. In this work, the upconversion rate constants were determined under high average power pumping conditions by measuring gain coefficients and an appropriate comparison made from a simple rate equation model

Keywords

optical frequency conversion; 2 micron; Tm,Ho:AZF; ZrF₄-AlF₃:Tm,Ho; co-doped alumino-zirco-fluoride glass; efficiency; gain coefficient; laser levels; optical pre-amplifier; rate equation model; upconversion rate constants; Absorption; Electromagnetic coupling; Equations; Gain measurement; Glass; Land surface temperature; Optical materials; Optical noise; Optical pumping; Pump lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society Annual Meeting, 1994. LEOS '94 Conference Proceedings. IEEE

Conference_Location

Boston, MA

Print_ISBN

0-7803-1470-0

Type

conf

DOI

10.1109/LEOS.1994.586651

Filename

586651