Large Kerr effect in bulk Se-based chalcogenide glasses.
High-speed optical communication requires ultrafast all-optical processing and switching capabilities. The Kerr nonlinearity, an ultrafast optical nonlinearity, is often used as the basic switching mechanism. A practical, small device that can be switched with ~1-pJ energies requires a large Kerr effect with minimal losses (both linear and nonlinear). We have investigated theoretically and experimentally a number of Se-based chalcogenide glasses. We have found a number of compounds with a Kerr nonlinearity hundreds of times larger than silica, making them excellent candidates for ultrafast all-optical devices.
G
G
Lenz
J
J
Zimmermann
T
T
Katsufuji
M E
ME
Lines
H Y
HY
Hwang
S
S
Spälter
R E
RE
Slusher
S W
SW
Cheong
J S
JS
Sanghera
I D
ID
Aggarwal