Walter J Sanders

US Patent:

56755945, Oct 7, 1997

Filed:

Jul 9, 1996

Appl. No.:

8/678475

Inventors:

Floyd E. Hovis - Apopka FL
Stephen E. Davis - Apopka FL
Bart A. Shepherd - Winter Park FL
Walter R. Sanders - Apopka FL
Ronald R. Selleck - Winter Park FL

Assignee:

Litton Systems, Inc. - Woodland Hills CA

International Classification:

H01S 310

US Classification:

372 22

Abstract:

A laser system includes an apparatus having a primary laser resonator having a laser medium therein for producing a laser beam of a first wavelength and a second laser resonator optically connected to the primary resonator to allow a portion of the laser energy from the primary laser resonator to pass into the secondary laser resonator. An optical parametric oscillator is located intracavity of the secondary laser resonator and includes a nonlinear crystal for producing a laser beam of a second wavelength therefrom. A coherent beam output is coupled to the optical parametric oscillator for producing an output beam of predetermined wavelength of the second wavelength while blocking the output of the laser beam of the first wavelength so that a dual resonator combines a secondary laser cavity and an optical parametric oscillator to produce a predetermined output wavelength. The compact multiple resonator laser system has a substrate mirror system having four mirror surfaces thereon positioned to form two laser resonators. A multi-pass corner cube is mounted to fold the light beams between a pair of substrate mirrored surfaces while a transfer corner cube is positioned to transfer a laser beam from one resonator to the second resonator to form a very compact pair of laser resonators.

US Patent:

56087446, Mar 4, 1997

Filed:

Mar 31, 1995

Appl. No.:

8/414530

Inventors:

Floyd E. Hovis - Apopka FL
Stephen E. Davis - Apopka FL
Bart A. Shepherd - Winter Park FL
Walter R. Sanders - Apopka FL
Ronald R. Selleck - Winter Park FL

Assignee:

Litton Systems, Inc. - Woodland Hills CA

International Classification:

H01S 310

US Classification:

372 21

Abstract:

A laser system includes an apparatus and method having a primary laser resonator having a laser medium therein for producing a laser beam of a first wavelength and a second laser resonator optically connected to the primary resonator to allow a portion of the laser energy from the primary laser resonator to pass into the secondary laser resonator. An optical parametric oscillator is located intracavity of the secondary laser resonator and includes a non-linear crystal for producing a laser beam of a second wavelength therefrom. A coherent beam output is coupled to the optical parametric oscillator for producing an output beam of predetermined wavelength of the second wavelength while blocking the output of the laser beam of the first wavelength so that a dual resonator combines a secondary laser cavity and an optical parametric oscillator to produce a predetermined output wavelength. The compact multiple resonator laser system has a substrate mirror system having four mirror surfaces thereon positioned to form two laser resonators. A multi-pass corner cube is mounted to fold the light beams between a pair of substrate mirrored surfaces while a transfer corner cube is positioned to transfer a laser beam from one resonator to the second resonator to form a very compact pair of laser resonators.