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  ______   _    _    __   __     ___      _____   
 /_____// | || | ||  \ \\/ //   / _ \\   / ____|| 
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 `__ `     \____//   /_//\_\\ |_||  |_|| \_____|| 
 /_//       `---`    `-`  --` `-`   `-`   `----`  
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Text this: Focusing Effect in Multimode Vertical Cavity Surface Emitting Lasers by Parallel Trenches Surface Profiling