All-optical switching mediated by magnetic nanoparticles.
We demonstrate the switching of light in the near-infrared region (1.55 microm) through the manipulation of magnetic nanoparticles in a magnetic fluid by using another light in the visible region (0.532 microm). The formation of a photonic gap is found in the magnetic fluid when a laser light or a magnetic field is applied. A shift of the photonic gap to longer wavelengths is observed with increasing laser power or magnetic field strength.
Dai
Qiao-Feng
QF
Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering,South China Normal University, Guangzhou 510006, China.
Deng
Hai-Dong
HD
Zhao
Wei-Ren
WR
Liu
Jin
J
Wu
Li-Jun
LJ
Lan
Sheng
S
Gopal
Achanta Venu
AV