Micro and Nano Raman Lasers

Fundamental differences between micro- and nano-Raman spectroscopy.

Electric field polarization orientations and gradients close to near-field scanning optical microscope (NSOM) probes render nano-Raman fundamentally different from micro-Raman spectroscopy. With x-polarized light incident through an NSOM aperture, transmitted light has x, y and z components allowing nano-Raman investigators to probe a variety of polarization configurations. In addition, the str...

The Nano–Micro Interface: Bridging Micro and Nano Worlds

By its very title, Nano-Micro Interface: Bridging Micro and Nano Worlds is a timely book for the field of nanotechnology. Since researchers can make microscale objects nanoscale (the top-down approach) as well as atomic and molecular species nanoscale (the bottom-up approach) are there applications in nanoscience and technology that can benefit, or be revolutionized, by combining both approache...

Feedback control of ultra-high-Q microcavities: application to micro-Raman lasers and microparametric oscillators.

We demonstrate locking of an on-chip, high-Q toroidal-cavity to a pump laser using two, distinct methods: coupled power stabilization and wavelength locking of pump laser to the microcavity. In addition to improvements in operation of previously demonstrated micro-Raman and micro-OPO lasers, these techniques have enabled observation of a continuous, cascaded nonlinear process in which photons g...

Nano-Electromechanical Optoelectronic Tunable Lasers

Mid-IR Silicon Raman Lasers

Silicon is arguably the best Raman medium for the mid-wave infrared spectrum. This new technology can expand the application space of silicon photonics beyond data communication and into biochemical sensing, laser medicine, and LIDAR.