Modal sensor

Details Modal sensor Modal sensor

1980-05-14

1982-08-17

Rosenberger, R. A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356121, 350295, G02B 508

Patent

active

043447074

ABSTRACT:
Wave front distortions of a laser beam are detected by measuring the distribution of the point spread function of a focussed portion of that beam and by generating moments of that function representing tip, tilt, focus, and astigmatisms of the beam. Signals representing these moments can be used directly for correcting the distortions.

REFERENCES:
patent: 3719421 (1973-03-01), Poilleux et al.
patent: 3923400 (1975-12-01), Hardy
patent: 4141652 (1979-02-01), Feinleib
patent: 4239392 (1980-12-01), Pohle
Hardy, J. W., "Active Optics: A New Technology for the Control of Light", Proceedings of the IEEE, vol. 66, No. 6, (Jun. 1978), pp. 651-659 and 664-665.

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