Optics: measuring and testing – Angle measuring or angular axial alignment – With photodetection remote from measured angle
Patent
1985-12-20
1989-01-17
Buczinski, Stephen C.
Optics: measuring and testing
Angle measuring or angular axial alignment
With photodetection remote from measured angle
356141, 356153, G01B 1126
Patent
active
047984627
ABSTRACT:
A method and apparatus are disclosed for providing a self-aligning phase conjugate laser beam that is automatically boresighted with an active or passive tracking sensor. A single-transverse-mode laser oscillator 12 and a tracking sensor 14 are mounted on opposite sides of an output coupling beamsplitter 15, all attached to a stabilized platform 13 which is part of the inner gimbal of a pointing and tracking system. A multipass laser amplifier 21 with a phase conjugation mirror 22 and an optional nonlinear frequency-conversion device 20 are located off the inner gimbal. The inner gimbal allows rotation of the stabilized platform about an elevation axis 16, and an outer gimbal or pedestal mount permits rotation about an azimuthal axis 17. The phase conjugation mirror 22 compensates the beam for the effects of optical aberrations caused by thermally induced changes in the amplifier medium and the nonlinear medium (if used) and also compensates the beam for angular tilt and jitter in the beam line of sight due to structural flexibility and motion of the stabilized platform. Part of the oscillator output passes through the beamsplitter to the tracking sensor to mark the far-field location of the amplified output beam. The tracking sensor also views a target image after it is reflected by the beamsplitter. The tracking system measures the angular displacement between the target aimpoint and the locus of the output beam as marked by the oscillator and generates tracking error signals which are used to close a servomechanical feedback loop around the gimbal orientation apparatus. Pointing errors resulting from misalignment of the oscillator, the tracking sensor, and the beamsplitter are compensated by this technique.
REFERENCES:
patent: 3709608 (1973-01-01), Degnan et al.
patent: 4005935 (1977-02-01), Wang
patent: 4146329 (1979-03-01), King et al.
patent: 4155096 (1979-05-01), Thomas et al.
patent: 4314276 (1982-02-01), Woolfson
patent: 4346994 (1982-08-01), Cruz
patent: 4386848 (1983-06-01), Clendenin et al.
patent: 4395121 (1983-07-01), Nory et al.
patent: 4587622 (1986-05-01), Herzog
Buczinski Stephen C.
Hughes Aircraft Company
Karambelas A. W.
Streeter W. J.
Taylor Ronald L.
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