Integrated optic device for laser beam scanning

Details Integrated optic device for laser beam scanning Integrated optic device for laser beam scanning

1988-03-18

1990-02-20

Gonzalez, Frank

350 9613, G02B 610

Patent

active

049020889

ABSTRACT:
An integrated device (10) for scanning a laser beam, including a substrate (12). An electro-optic waveguide (14), a Bragg grating electrode array (31) in operative contact with the waveguide, and a array of electro-optic prisms (33). The electrode array (31) includes a plurality of upper grating electrodes (26) and a lower first electrode (32). A voltage potential can be placed across individual upper grating electrodes (26) and the lower electrode (32) to establish up a Bragg grating in a small localized region. This localized Bragg grating diffracts a laser beam carried by the waveguide and creates a spatially-variable diffracted beam (40) which can be continuously scanned by deflecting the diffracted beam (40) with the electro-optic prism array (33). The integrated device can also perform two dimensional scanning by including an array of small period diffraction gratings (61), to diffract the laser beam (24) out of the plane of the waveguide film (14), or an array of hologram facets (51) to map a set of points defined by the hologram facets (51) into a two-dimensional matrix of points.

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