Generation of optical filaments by use of phase plate

Details Generation of optical filaments by use of phase plate Generation of optical filaments by use of phase plate

2006-05-23

2006-05-23

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular beam control device

C372S023000, C372S109000

Reexamination Certificate

active

07050469

ABSTRACT:
Optical filaments are formed controllably in a gaseous medium such as air. A phase plate introducing a phase singularity is introduced into the path of the laser beam that forms the optical filaments in the medium. The phase plate is preferably a vortex phase plate having one or more singularities. The locations and characteristics of the phase singularities are selected to control the number and locations of the optical filaments.

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