Dynamic coherent nuller

Details Dynamic coherent nuller Dynamic coherent nuller

2005-04-19

2005-04-19

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

By light interference

Reexamination Certificate

active

06882427

ABSTRACT:
Embodiments of the present invention are directed to a nuller that is used to significantly reduce or eliminate a monochromatic radiation signal within a polychromatic object field. In one embodiment, a method of nulling a coherent light from a light beam having the coherent light and an incoherent light comprises collimating the light beam having the coherent light and the incoherent light, and destructively interfering the coherent light to null the coherent light with no destructive interference of the incoherent light so as to project the incoherent light without the coherent light.

REFERENCES:
Hinz et al., “Imaging circumstellar environments with a nulling interferometer,”Nature, 395:251-253 (1998).
Serabyn, E., “Nanometer-level path-length cpntrol scheme for nulling interferometry,”Applied Optics, 38(19):4213-4216 (1999).
Serabyn et al., “Deep nulling of visible light,”Applied Optics, 38(34):71287132 (1999).

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