A new instrument for time-resolved XUV photoemission spectroscopy is available for
tour in the Allison lab on the Stony Brook campus. Using a high-power fiber laser
frequency comb and a high-finesse resonator, femtosecond XUV pulses are produced at
78 MHz repetition rate. This cavity-enhanced harmonic generation scheme can produce
coherent XUV light with nearly the flux and duty cycle of a synchrotron, but with
femtosecond (and potentially attosecond) pulse duration. A single high-order harmonic
between 20 and 60 eV is selected with a time-preserving monochromator and focused
at the center of a UHV surface science chamber where TRPES experiments can be performed
with 100 fs resolution.
Logistical Details: The Allison Lab is in the basement of the chemistry building in
room 016, about 3 minutes walk from the Wang center.