This research is dedicated to develop a safety measurement for human-machine cooperative system, in which the machine region and the human region cannot be sepa
We report on the implementation of a KTP optical parametric oscillator pumped by a pulsed tunable Ti:sapphire laser. Two major improvements were achieved, inclu
The direct method developed by Clarkson and Kruskal (1989 J. Math. Phys. 30 2201) for finding the symmetryreductions of a nonlinear system is extended to find t
We investigate the squeezing properties of a trapped ion in a standing-wave laser. Our results show that the squeezing of a trapped ion in the standing-wave la