The Continuing Evolution of Femtosecond Frequency Combs

Date: 
Monday, March 8, 2010 -
4:00pm to 5:00pm
Speaker: 
David Jones
Speaker's Institution: 
University of British Columbia

 

Following their development in early 2000, femtosecond frequency combs found immediate application as reference rulers in optical frequency metrology. Stabilization of the frequency comb emitted by a femtosecond laser has also enabled production of carrier-envelope phase-stabilized femtosecond pulses, thereby spurring seminal work in attosecond metrology. As the comb technology itself has matured over the past decade, new areas of application have emerged such as precise calibration of astronomical spectrographs, arbitrary optical waveform synthesis, and precision spectroscopy. In this talk, I will highlight these new developments and discuss related and current work at UBC including multi-wavelength hetrodyne THz spectroscopy, a widely tunable optical frequency synthesizer suitable for high precision spectroscopy, and a new low-noise, high-photon-flux EUV table-top source based on resonant cavity enhancement of a femtosecond laser. Using this latter source we are pursuing two different spectroscopic investigations with photon energies up to 25 eV: size metrology of volatile nanoparticles in aerosols and angle-resolved photo-electron spectroscopy of high-Tc superconductors.