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OSA (The Optical Society) articles

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Seeing the forest with the latest LiDAR system

Seeing the forest with the latest LiDAR system
Shortly after lasers were first developed in the 1960s, LiDAR—whose name originated as a combination of 'light' and 'radar'—capitalised on the newly unique precision they offered for measuring both time and distance. LiDAR quickly became the standard method for (3D) land surveys and is now used in a multitude of sensing applications, such as self-driving cars.
28th June 2017


Heat-resistant device improves solar cell efficiency

Heat-resistant device improves solar cell efficiency
Scientists have sought to increase the efficiency of photovoltaics by creating "multi-junction" solar cells, made from several different semiconductor materials that absorb at varying wavelengths of light. The problem is, such multi-junction cells are expensive to make. Broadband solar absorption previously has been achieved using metal-insulator-metal (or MIM) resonators, which consist of an insulator sandwiched between a thick bottom and a thin top layer, each made of metals like chromium and gold.
2nd August 2016


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