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First green semiconductor laser plugs spectrum gap

作者:顾裒股    发布时间:2018-01-24 01:00:28    

SEMICONDUCTOR lasers have finally gone green, plugging a gaping hole in the spectrum and paving the way for full-colour projectors for cellphones. Costly solid-state green lasers already exist, but the new green semiconductor laser can be used with existing red and blue semiconductor lasers to provide cheap full-colour output on a tiny scale. “Green semiconductor lasers combined with red and blue give full-colour output on a tiny scale” The colour emitted by the laser depends on its chemistry. A gallium indium nitride active layer over a gallium nitride substrate makes for a blue laser,

 

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