Guang S. He, Ph.D.

Multi-photon related fundamental studies and applications:

• Multi-photon pumped frequency-upconversion lasing
• Multi-photon absorption based optical power limiting and stabilization
• Multi-photon excitation enhanced stimulated Rayleigh-Bragg scattering
• Novel nonlinear multi-photon spectroscopy using intense continuum generation
• Dynamic studies of ultrafast multi-photon excitation processes

Novel nonlinear optical effects studies

• Optical phase-conjugation with backward stimulated emission from lasing media
• Stimulated Kerr scattering from liquid Kerr media
• Multi-photon resonance-enhanced refractive-index change and self-focusing
• Multi-photon enhanced spatial soliton formed by third-order harmonic generation

Novel photonics devices

• Dye-doped polymer core or coating based fiber lasers and amplifiers
• Liquid core filled fiber lasers
• Multi-photon active core filled optical fiber power limiter and stabilizer
• Leaking waveguide laser devices