Monolithic laser scanning device

Details Monolithic laser scanning device Monolithic laser scanning device

1980-09-17

1982-11-23

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

350 9611, 372 24, H01S 319

Patent

active

043609210

ABSTRACT:
A monolithic laser scanning device includes a semiconductor laser region integral with but spaced from an optical scanning region. These regions are optically coupled which may include a continuous transparent or passive waveguide medium. The periodic array of substantially parallel spaced electrodes are associated with the waveguide medium in the optical scanning region. The electrodes extend in the same direction as the propagating radiation in the medium. The voltages are applied in a pattern to the electrodes which voltages vary from one electrode to the next adjacent electrode to a predetermined value over several of the electrodes. The same pattern of voltages or a similar pattern of different voltages is applied over several of the next adjacent electrodes to the predetermined value until the pattern is completed across the electrode array to produce a corresponding approximation of a desired phase retardation along the phase front of the propagating radiation. By changing the magnitude of the applied voltages across the electrodes, the approximation of the front phase retardation may be varied and the phase front of the propagating radiation may be continuously varied to cause the radiation to scan in a direction transverse to the direction of the propagating radiation in the medium.

REFERENCES:
patent: 4112389 (1978-09-01), Streifer et al.
patent: 4136928 (1979-01-01), Logan et al.
patent: 4318058 (1982-03-01), Mito et al.

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