Abstract: This paper reports on the power scalability of 1.55-μm-wavelength photonic crystal surface emitting lasers (PCSELs) utilizing the design flexibility of the double-lattice photonic crystal.

Abstract: This paper presents an external quasi-optical converter for a 28 GHz 20 kW continuous wave gyrotron with TE 1,2 operating mode. The gyrotron has a big output diameter, which leads to a small ...

Even as tobacco use around the world has continued to fall, the rates of individuals — especially young people — using nicotine-containing e-cigarettes and vapes have climbed significantly, according ...