Rhythmic bursting in a cluster of microbeads driven by a continuous-wave laser beam.
Rhythmic bursting on the order of seconds in a cluster of plastic beads under continuous irradiation of a focused neodymium-doped yttrium aluminum garnet (Nd:YAG) laser beam (1064 nm) is reported. The oscillatory instability is induced as a result of competition between trapping and scattering forces, where both forces are induced by the focused laser beam. Above a critical power of the laser beam, mode bifurcation from the stationary state into periodic bursting is observed. Our model employing ordinary differential equations reproduces the essential aspects of the experimental results.
Magome
Nobuyuki
N
Department of Physics, Graduate School of Science, Kyoto University and CREST, Kyoto 606-8502, Japan.
Kitahata
Hiroyuki
H
Ichikawa
Masatoshi
M
Nomura
Shin-ichiro M
SM
Yoshikawa
Kenichi
K