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For centuries, people have known that light exhibits wave like behavior in certain situations. When light passes through certain materials, they can change the polarization of light waves (i.e. the direction of oscillation). The core components of optical communication networks, such as optical isolators or photodiodes, utilize this characteristic. This type of component allows light to propagate ...
Lithography machine is the key equipment for making high precision mask plate. Using a very fine laser beam, the highly precise line pattern is drawn on the mask substrate under the control of an extremely precise automatic control system.Laser direct writing is to use a laser beam with variable intensity to implement variable dose exposure on the resist material (photoresist) on the subst...
A powerful telescope in South Africa has detected a space laser 5 billion light-years away from Earth, known as the "megamaser". Scientists named it Nkalakatha, which means "big boss" in Zulu language.Nkalakatha is the farthest hydroxyl giant detected so far, discovered by the MeerKAT telescope on the first night of the survey, which is expected to include 3000 hours of observation. The team of sc...
Recently, the National Renewable Energy Laboratory (NREL) under the US Department of Energy has made a revolutionary breakthrough by developing a concept validation method aimed at completely removing polymers from solar panel manufacturing, thereby achieving more efficient and environmentally friendly recycling.Solar panels have always been praised for their recyclability. However, the thin plast...
Recently, researchers have developed a comb laser with higher stability and efficiency. The use of synthetic reflection self injection locking micro comb design enables the laser to achieve stability and increase conversion efficiency by more than 15 times. This efficient, stable, and easy to manufacture design is expected to make rapid progress in fields such as portable sensors, autonomous navig...