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

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Text this: Self-imaging, self-healing beams generated by photorefractive volume holography