Using the self-filtering property of a femtosecond filament to improve second harmonic generation.
In this paper we demonstrate the use of NIR femtosecond filament for improving the generation of second harmonic using a type I BBO crystal. Using this method the beam propagation factor (M(2)) of the second harmonic was improved significantly; which led to enhancement of the attainable SH intensity by up to two orders of magnitude. This method can be beneficial for applications demanding high intensities, small spot size or long interaction lengths.
Shwa
David
D
Racah Institute of Physics, Hebrew University, Jerusalem 91904, Israel.
Eisenmann
Shmuel
S
Marcus
Gilad
G
Zigler
Arie
A
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007259:Infrared Rays; D008029:Lighting / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity