Nonlinear liquid-crystal fiber structures for passive optical limiting of short laser pulses.
Optical limiting of nanosecond and picosecond laser pulses through millimeter-length isotropic liquid-crystalcored fiber structures is reported. Low limiting threshold and clamped transmitted outputs are observed. The underlying nonlinear mechanisms are nonlinear photoabsorptions and scattering and lossy waveguiding caused by laser-induced thermal-density index fluctuations.
Khoo
I C
IC
Wood
M V
MV
Lee
M
M
Guenther
B D
BD