Passive, lossy materials with positive index at real frequencies can be used to realize optical antimatter under complex frequency excitation. Our approach enables arbitrary complex \(\epsilon ,\,\mu\ ...
Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...
Established in 2000, Yangzhou Huasheng Optical Instrument Factory specializes in producing portable laser levels, optical lenses, prisms, optical coating filter, glass plate, protection window, door ...
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