Generation of 20-fs pulses by a prismless Cr(4+):YAG laser.
Ultrafast optical pulses shorter than 20 fs with 400-mW average power at a 110-MHz repetition rate have been generated by a Cr(4+):YAG laser with only double-chirped mirrors for dispersion compensation. The corresponding pulse spectrum has a peak intensity at 1450 nm and extends from 1310 to 1500 nm full width at half-maximum (FWHM). These pulses, which are believed to be the shortest generated to date from a Cr(4+):YAG laser, are only four optical cycles within the FWHM intensity width.
Ripin
D J
DJ
Chudoba
C
C
Gopinath
J T
JT
Fujimoto
J G
JG
Ippen
E P
EP
Morgner
U
U
Kärtner
F X
FX
Scheuer
V
V
Angelow
G
G
Tschudi
T
T