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Invitation to a talk by Piotr Masłowski, Nicolaus Copernicus University, Poland

26.07.2018 10:00 - 12:00

Broadband absorption and dispersion spectroscopy with optical frequency comb

Thursday, July 26th, 2018, 10:00 a.m. Seminar room, 5th floor, Boltzmanngasse 5, 1090 Vienna

Hosted by: Oliver Heckl

 

I will present recent developments of the comb-based cavity-enhanced broadband absorption and dispersion spectroscopy. The comb-line resolving approaches and Fourier transform spectroscopy with sub-nominal resolution overcome the frequency resolution limits of conventional techniques. By the measurements of the high-finesse cavity mode’s shapes with Hz precision we test the limits of comb- based techniques and apply it for absorption and dispersion measurements based on cavity mode width and shifts, respectively. Description of the possible detection schemes based both on dispersive elements and Fourier Transform will be given and advantages for various applications will be discussed.