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Center for Astrophysics Research and Technologies Seminar Series Information

 

Events Calendar

Synthesizing Light

Wednesday September 12, 2018
11:00 am


 Presenter:  Scott Diddams, NIST and University of Colorado Boulder
 Series:  OSE - CQuIC Seminars
 Abstract:  Frequency synthesis is ubiquitous in all aspects of our modern technological society, with examples being found in wide ranging applications from computing, communications and navigation systems to sensors and scientific instrumentation. Historically, the generation and precise control of electromagnetic radiation has been confined to the radio frequency and microwave domains, but “light gears” based on optical frequency combs dramatically expand the synthesis bandwidth to cover the entire terahertz and optical domains as well. In this talk, I will describe the laser and photonic tools we use to synthesize light with precise control over its phase and frequency. This is the basis of a new generation of optical clocks that now track time to 18 digits, as well as the driver of applications we are pursing in fields ranging from infrared trace gas sensing to astronomy. In addition, I will present light synthesizers based on parametric oscillation in low-loss microresonators. Such miniature devices now enable optical frequency synthesis on a photonic-integrated-chip.
 Host:  Francisco Becerra-Chavez
 Location:  Room 190, Physics & Astronomy

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