Nanoporous compound materials for optical applications – Microlasers and microresonators

Intracellular microlasers

Optical microresonators1 which confine light within a small cavity are widely exploited for various applications ranging from the realization of lasers2 and nonlinear devices3, 4, 5 to biochemical and optomechanical sensing6, 7, 8, 9, 10, 11. Here we employ microresonators and suitable optical gain materials inside biological cells to demonstrate various optical functions in vitro including las...

Single Mode Lasing from Hybrid Hemispherical Microresonators

Enormous attention has been paid to optical microresonators which hold a great promise for microlasers as well as fundamental studies in cavity quantum electrodynamics. Here we demonstrate a three-dimensional (3D) hybrid microresonator combining self-assembled hemispherical structure with a planar reflector. By incorporating dye molecules into the hemisphere, optically pumped lasing phenomenon ...

Nanoporous compound materials for optical applications

Tuning Whispering Gallery Mode Lasing from Self-Assembled Polymer Droplets

Optical microcavities are important for both fundamental studies of light-matter interaction and applications such as microlasers, optical switches and filters etc... Tunable microresonators, in which resonant modes can be manipulated, are especially fascinating. Here we demonstrate a unique approach to mechanically tuning microresonators formed by polymer droplets with varying sizes. The dropl...

Whispering gallery mode microresonators: Fundamentals and applications

— Confinement of light into small volumes has become an essential requirement for photonic devices; examples of this trend are provided by optical fibers, integrated optical circuits, semiconductor lasers, and photonic crystals. Optical dielectric resonators supporting Whispering Gallery Modes (WGMs) represent another class of cavity devices with exceptional properties, like extremely small mod...