"Ultra-High-Q Microresonators for Nonlinear Optics, Integrated Photonics, and Optical Frequency Comb Generation"

Pascal Del'Haye, National Institute of Standards & Technology, Boulder CO.

February 24th (Monday), 3:15pm
Engineering Science Building (ESB), Room 2001

Optical microresonators are an enabling tool for a large variety of applications in applied photonics and basic research. This talk focuses on applications and developments in ultra-high-Q microresonators with photon lifetimes of >100 ns and cavity enhancements of up to a million. The high optical quality factor combined with a strong confinement of light into tiny mode volumes enables the observation of nonlinear optical effects at extremely low threshold powers.

One of the main topics of this talk is the microresonator-based generation of optical frequency combs via four-wave mixing. Recent research sheds first light on novel mode locking mechanisms in these resonators.

In addition, this talk will give a brief outlook on potential integration of ultra-high-Q microresonators with other microphotonic devices. A fully integrated microresonator system on a chip is a promising candidate for out-of-the-lab applications of optical frequency combs for precision metrology and spectroscopy.

About Pascal Del'Haye:

Pascal Del’Haye studied physics at RWTH Aachen and LMU Munich. He received his PhD in 2011 for his work on microresonator-based frequency combs in the Laser Spectroscopy Division at the Max Planck Institute for Quantum Optics in Munich. Presently, Pascal is a postdoctoral researcher in the Time and Frequency Division of the National Institute of Standards and Technology in Boulder, CO. His research focus is on linear and nonlinear optical effects in ultra-high-Q microresonators.

Hosted by: Professor Larry Coldren