应航天学院段小明副教授和戴通宇副教授邀请，美国新墨西哥大学（University of New Mexico）Ravinder K. Jain教授于近日来我校访问并展开学术交流活动，欢迎广大师生积极参加。
题目：Glass Photonics, Semiconductor Nanoparticles, and... A Teeny Bit of Plasmonics
Ravinder K. Jain, APS fellow, IEEE fellow, OSA fellow and SPIE fellow, received the M.S. in Electrical Engineering & Computer Sciences in 1972 and the Ph.D in Electrical Engineering & Computer Sciences in 1975 from the University of California, Berkeley. He is an associate editor in Optics Express.
He is a Professor in ECE and Physics at University of New Mexico. His research focuses on lasers, optics, photonics and nonlinear optics.
Glasses are used for numerous photonic structures including optical fibers, on-chip waveguides and microresonators. Depending on the specific geometry, many of these structures lead to important linear and nonlinear optical phenomena, and undoped glasses lend themselves quite naturally to a broad range of sensors, especially via evanescent-wave interactions, both in linear waveguides and in closed resonator structures.
The optical properties of free ions doped in glasses depend strongly on local field environments – and more critically on – the distribution of phonon energies in these glasses. As such, the luminescence properties of ions in glasses depend very strongly on honon energies and multi-phonon relaxation, which can play a severe role for mid-infrared transitions.
I will discuss some of these effects and the use of appropriate ions in glasses for demonstration of efficient lasing in the mid-infrared. The role of using semiconductor nanoparticle “cages” embedded in these glasses for next generation laser gain media will be explored.
Last, but not the least, I will discuss the use of plasmonic nanostructures with semiconductor quantum dots for unique nonlinear optical and sensing phenomena.