Ultrashort pulse compression and delivery in a hollow-core photonic crystal fiber at 540 nm wavelength.
We have fabricated a bandgap-guiding hollow-core photonic crystal fiber (PCF) capable of transmitting and compressing ultrashort pulses in the green spectral region around 532 nm. When propagating subpicosecond pulses through 1 m of this fiber, we have observed soliton-effect temporal compression by up to a factor of 3 to around 100 fs. This reduces the wavelength at which soliton effects have been observed in hollow-core PCF by over 200 nm. We have used the pulses delivered at the output of the fiber to machine micrometer-scale features in copper.
Centre for Photonics and Photonic Materials, Department of Physics, University of Bath, Bath, BA2 7AY, UK. pjm36@bath.ac.uk
P J
PJ
Mosley
W C
WC
Huang
M G
MG
Welch
B J
BJ
Mangan
W J
WJ
Wadsworth
J C
JC
Knight