Scalable spherical laser

Details Scalable spherical laser Scalable spherical laser

2006-04-11

2009-02-17

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular active media

Active media with particular shape

C372S066000

Reexamination Certificate

active

07492805

ABSTRACT:
A spherical laser includes a transparent or semi-transparent outer spherical vessel having an internal cavity, an amplifying medium in the cavity, and means to excite the amplifying medium. The sphere is provided with a partially reflective coating to act as a spherical optical resonator. Excitation of the amplifying medium produces an optical gain. When the gain exceeds cavity losses and threshold conditions are met, lasing is supported. This creates a three-dimensional, spherically radiating emission, emulating a point source. The output is radially diverging, but is harnessed by enclosing the sphere within a mirrored ellipse to image the output to a point, or within a mirrored parabola to columinate the emission. A concentric, reflective inner sphere may be disposed in the cavity, with the amplifying medium lying between the two spheres. A voltage potential is applied between the spheres to excite the medium.

REFERENCES:
patent: 3440561 (1969-04-01), Pole et al.
patent: 3516013 (1970-06-01), Pole
patent: 4011855 (1977-03-01), Eshelman
patent: 4829537 (1989-05-01), Baer
patent: 5631778 (1997-05-01), Powell
patent: 6175454 (2001-01-01), Hoogland et al.
patent: 6807216 (2004-10-01), Hilliard

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