Heterojunction phototransistors (HPTs) with several Ge/Si nano-dot layers as the absorption region are fabri cated to obtain improved light detectivity at 1.55
We calculate the scattering cross section of an electron with respect to the spontaneously produced laser radiation in the first free-electron laser (FEL) with
A planar optical waveguide is formed in monoclinic double rare-earth-tungstate laser crystal Yb:KLu(WO4)2 by 6.0 MeV oxygen ion implantation with a dose of 2 ×
To explore the physical contents of the light-cone QCD effective Hamiltonian on meson sector, the mass spectra of flavour off-diagonal mesons consisting of (u,
We propose a scheme for realizing negative refractive index in a four-level atomic system. It is shown that such a system can simultaneously exhibit negative pe
By using a pump recycling configuration, the maximum power of 8.1 W in the wavelength range 1.935-1.938 μm is generated by a 5-mm long Tm:YAlO3 (4 at.%) laser
We investigate the laser damage behaviour of an electron-beam-deposited TiO2 monolayer at different process parameters. The optical properties, chemical composi
For ZnO/diamond structured surface acoustic wave (SAW) filters, performance is sensitively dependent on the quality of the ZnO films. In this paper, we prepare