發送短信 : Tunability of the free-spectral range by microwave injection into a mid-infrared quantum cascade laser

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