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SUMMARY:Quantum cascade lasers and frequency combs: towards chip-based opt
 ical chemical sensors
DTSTART:20170502T110000
DTEND:20170502T120000
DTSTAMP:20260505T052942Z
UID:2d04e1af59ac80a8a8bd2dcfd37513dee3d3e75b094835b16d775244
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Jérôme Faist\nIMT Distinguished Lecture\n\nAbstract: T
 he mid-infrared and terahertz spectral range is key to many applications f
 or sensing and imaging\, as many molecules have their fundamental vibratio
 n modes in that frequency region. Using traditional multipass cells and si
 ngle frequency quantum cascade lasers\, detection of light molecules with 
 sup-ppb sensitivity and isotopic selectivity has been achieved. There is a
  strong interest in extending these results to multiple gases and to minia
 turized\, portable systems.  Towards this goal\, the recent demonstration
  of comb operation in quantum cascade lasers opens up new avenues for broa
 dband spectroscopy. We recently demonstrated a comb device delivering 1 wa
 tt of optical power over a bandwidth of more than 100cm-1 at 8um wavelengt
 h. These devices were achieved by engineering the waveguide dispersion usi
 ng plasmonic resonances.\n\nBio: Jérôme Faist obtained his Diploma and P
 h.D. in Physics (1989) from EPFL. He then worked  at IBM Rueschlikon (89-
 91) and Bell Laboratories (91-97). It is during that time that he made the
  key contribution to the invention and further development of the quantum 
 cascade laser (QCL). He was then nominated full professor in the physics i
 nstitute of the University of Neuchâtel (1997) where his research on QCL 
 enabled to demonstrate the first room temperature\, continuous wave operat
 ion of a QCL as well as important milestones in the development of THz QCL
 . Continuing his research as an ordinary professor in the ETH Zurich (2007
 )\, his interests broadened to circuit-based THz lasers\, ultrastrong ligh
 t-matter coupling as well as QCL optical frequency combs\, which his group
  demonstrated first in 2012.  His key contribution to the development of 
 the quantum cascade laser was recognized by a number of awards that includ
 e the IEEE/LEOAS William Streifer award (1998)  the National Swiss Latsis
  Prize 2002. He is the recipient of an advanced ERC grant in 2013. He is m
 ember of APS and a fellow of the Optical Society of America.
LOCATION:SV 1717 https://plan.epfl.ch/?room==SV%201717
STATUS:CONFIRMED
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