The Optical Vortex Lens

Grover A. Swartzlander, Jr.

Researchers have long known about optical vortices—or so-called “twisted light”—but only recently have they begun to apply them to practical systems. For example, a helical-shaped phase mask could be used as a type of “vortex lens” that may lead to improvements in astronomical observation, the manipulation of micro-particles, optical pattern recognition and other areas.

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