Text this

Number:

Provider:

CAPTCHA:

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

Please enter what you see:

Text this: Low-energy-threshold deep-ultraviolet generation in a small-mode-area hollow-core fiber