Amplifiers – Parametric amplifiers – Semiconductor type
Patent
1988-11-14
1990-02-20
Tarcza, Thomas H.
Amplifiers
Parametric amplifiers
Semiconductor type
372 21, 372 33, H01S 398
Patent
active
049029800
ABSTRACT:
An improved phase conjugate master-oscillator power-amplifier laser system for providing a high-power low-distortion laser output beam. The system includes an improved oscillator such as a ring oscillator which rejects any of the output beam which is inadvertently fed back to the oscillator, thereby preventing unwanted oscillation. The system also includes an attenuator such as a spatial filter or an optical isolator that attenuates any amplified spontaneous emissions that may be reflected from the power amplifier to the oscillator, thereby preventing oscillator degradation that would otherwise result. The invention is particularly well-suited for a laser system which employs an SBS mirror for phase conjugation.
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Coble P. M.
Denson-Low W. K.
Duraiswamy V. D.
Hellner Mark
Hughes Aircraft Company
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