أرسل هذا في رسالة قصيرة: Azo-dye-doped absorbing photonic crystals with purely imaginary refractive index contrast and all-optically switchable diffraction properties

             ___      _____    _    _    _    _   
  ____      / _ \\   /  ___|| | || | || | || | || 
 |    \\   | / \ || | // __   | || | || | || | || 
 | [] ||   | \_/ || | \\_\ || | \\_/ || | \\_/ || 
 |  __//    \___//   \____//   \____//   \____//  
 |_|`-`     `---`     `---`     `---`     `---`   
 `-`