TY - JOUR
AU - Chuankun Zhang
AU - Stephen Schoun
AU - Christoph Heyl
AU - Gil Porat
AU - Mette Gaarde
AU - Jun Ye
AB - We demonstrate a femtosecond enhancement cavity with a crossed-beam geometry for efficient generation and extraction of extreme-ultraviolet (XUV) frequency combs at a 154 MHz repetition rate. We achieve a record-high out-coupled power of 600μW, directly usable for spectroscopy, at a wavelength of 97 nm. This corresponds to a > 60% out-coupling efficiency. The XUV power scaling and generation efficiency are similar to that achieved with a single Gaussian-mode fundamental beam inside a collinear enhancement cavity. The noncollinear geometry also opens the door for the generation of isolated attosecond pulses at > 100 MHz repetition rate.
BT - Physical Review Letters 
DA - 2020-08
DO - 10.1103/PhysRevLett.125.093902
N2 - We demonstrate a femtosecond enhancement cavity with a crossed-beam geometry for efficient generation and extraction of extreme-ultraviolet (XUV) frequency combs at a 154 MHz repetition rate. We achieve a record-high out-coupled power of 600μW, directly usable for spectroscopy, at a wavelength of 97 nm. This corresponds to a > 60% out-coupling efficiency. The XUV power scaling and generation efficiency are similar to that achieved with a single Gaussian-mode fundamental beam inside a collinear enhancement cavity. The noncollinear geometry also opens the door for the generation of isolated attosecond pulses at > 100 MHz repetition rate.
PB - American Physical Society
PY - 2020
SE - 093902
EP - 093902
T2 - Physical Review Letters 
TI - Noncollinear Enhancement Cavity for Record-High Out-Coupling Efficiency of an Extreme-UV Frequency Comb
UR - https://link.aps.org/doi/10.1103/PhysRevLett.125.093902
VL - 125
ER -