發送短信 : Ultrafast mid-infrared optics in gas-filled hollow core fiber

 _    _    _    _    _    _     ______    _____   
| \  / || | || | || | || | ||  /_   _//  / ____|| 
|  \/  || | || | || | || | ||   -| ||-  / //---`' 
| .  . || | \\_/ || | \\_/ ||   _| ||_  \ \\___   
|_|\/|_||  \____//   \____//   /_____//  \_____|| 
`-`  `-`    `---`     `---`    `-----`    `----`