A simple method of generating microwave signals by using an active DFB InP-InGaAsP laser structure integrated with a passive extended cavity is presented. High spectral purity (<-94 dBc/Hz, 10 kHz ...

Astronomers have uncovered a vast cloud of energetic particles—a "mini halo"—surrounding one of the most distant galaxy ...

Nanoparticles (NPs) are materials whose dimensions range from 1 to 1,000 nanometers (nm). Due to their nano-scale dimensions ...