Frequency-doubling in femtosecond laser inscribed periodically-poled potassium titanyl phosphate waveguides.
Frequency doubling has been achieved in femtosecond-laser-inscribed single-mode waveguides written in two periodically-poled potassium titanyl phosphate crystals. A conversion efficiency of 0.22 %W(1) was obtained for first-order quasi-phase matching at 980 nm and an efficiency of 0.02 %W(-1) for third-order quasi-phase matching at 800 nm.
Campbell
S
S
Thomson
R R
RR
Hand
D P
DP
Kar
A K
AK
Reid
D T
DT
Canalias
C
C
Pasiskevicius
V
V
Laurell
F
F