Quasi-phase-matched difference-frequency generation in periodically poled Ti:LiNbO(3) channel waveguides.
Mid-infrared radiation near 2.8 mum was generated by difference-frequency generation in an 80-mm-long periodically poled Ti:LiNbO(3) channel waveguide by pump radiation near 1.55 mum (tunable external-cavity laser) and a signal radiation of 3.391 mum (HeNe laser). We obtained a normalized conversion efficiency of 105% W(-1) , which is to our knowledge the highest value ever reported.
Hofmann
D
D
Schreiber
G
G
Haase
C
C
Herrmann
H
H
Grundkötter
W
W
Ricken
R
R
Sohler
W
W