The PBG group of Department of physics, Fudan University, recently proposed a method using a reflective photonic crystal slab to generate vortex with high conversion efficiency and without an ...
New research from Australia has shown that vortex generators and glass texturing have so far proved to be the most effective solutions among the novel methods explored for lowering the temperature of ...
Researchers 3D-printed a low-cost and efficient device that generates twisting light beams with orbital angular momentum and features integrated gain-filtering. WASHINGTON — Researchers have developed ...
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