If I understood the experiment correctly, it doesn't look anything exceptional. The crystal would just turn opaque after the first laser is shut off, and when t

If I understood the experiment correctly, it doesn't look anything exceptional. The crystal would just turn opaque after the first laser is shut off, and when they shot the laser at it to turn it transparent again, the photons from the second laser would be re-emitted in the same trajectory. It's not really "light frozen mid-air", but rather a crystal emitting light after being hit by a laser.