An all-fiber coupled multicolor microspherical light source

作者：O'Shea Danny G^*; Ward Jonathan M; Shortt Brian J; Chormaic Sile Nic

来源：IEEE Photonics Technology Letters, 2007, 19(21-24): 1720-1722.

DOI：10.1109/LPT.2007.906111

• erbium-doped fluoride glass
• microsphere resonator
• upconversion processes
• whispering gallery modes (WGMs)

We present results on the realization of an all-taper coupled, multicolor microspherical light source fabricated,from the erbium-doped fluoride glass ZBLALiP. Whispering gallery mode lasing at 1555 nm and fluorescent emissions from the ultraviolet to the infrared (IR) have been observed. A tapered fiber is used to launch 980-nm pump light into the microresonator cavity and to collect the resulting IR lasing. A separate, half-taper fiber is used to outcouple the upconversion spectrum over several hundred nanometers. A number of discrete emissions from 400 to 850 nm have been observed in the upconversion spectrum, indicating the suitability of this scheme as a miniature device with a 450-nm-wide band and reasonable output coupling efficiency.

• 出版日期2007-12