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  ______     ___      _____      ___      _  _   
 /_   _//   / _ \\   |__  //    / _ \\   | \| || 
 `-| |,-   | / \ ||    / //    | / \ ||  |  ' || 
   | ||    | \_/ ||   / //__   | \_/ ||  | .  || 
   |_||     \___//   /_____||   \___//   |_|\_|| 
   `-`'     `---`    `-----`    `---`    `-` -`

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Text this: Optimization of photonic crystals for terahertz waveguiding