A taper-fused microspherical laser source

作者：Ward Jonathan M^*; Feron Patrice; Chormaic Sile Nic

来源：IEEE Photonics Technology Letters, 2008, 20(5-8): 392-394.

DOI：10.1109/LPT.2008.916904

• erbium-ytterbium phosphate glass
• microsphere resonator
• tapered fiber
• whispering gallery modes (WGMs)

We report. on the realization of an integrated lasing device consisting of a microsphere optical resonator fused to a tapered optical fiber. A microsphere fabricated from Er:Yb-codoped phosphate glass is heated above its glass transition temperature of 375 degrees C by pumping it at 977 nm with 70 mW via a tapered optical fiber. The onset of thermal stress in the glass at a maximum pumping power results in the sphere melting and fusing to the taper coupler, without inhibition of whispering gallery mode lasing. A taper-fused microsphere laser with similar to 4.5 mu W of lasing power at 1593 nm is demonstrated.

• 出版日期2008-4