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Proceedings Paper

Diamond-Machined Geodesic Lenses In LiNbO3
Author(s): D. Mergerian; E. C. Malarkey; R. P. Pautienus; J. .C. Bradley
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Paper Abstract

The application of single point diamond turning to the fabrication of aberration-corrected, aspheric geodesic lenses in LiNb03 for use in integrated optics is reported. F/5 lenses with useful apertures of 4 mm and 5 mm have been produced. Lens profile accuracies ranging between 1.5 and 3 pm total indicator reading and depth accuracies of 0.25 to 2.0 μm have been achieved. The machined surfaces require only light polishing, which produces little effect on the figure accuracy, to remove residual machining marks. Waveguides grown by Ti-indiffusion are found to be characterized by very low scattering losses. Optical image spot sizes of 1.35 to 2.23 times diffraction-limited have been measured for input beam widths of 1.0 to 3.28 mm for a lens in which the edge rounding has not been incorporated into the aspheric correction. The edge rounding has been included in the correction for subsequent lenses.

Paper Details

Date Published: 26 July 1979
PDF: 11 pages
Proc. SPIE 0176, Guided Wave Optical Systems and Devices II, (26 July 1979); doi: 10.1117/12.957223
Show Author Affiliations
D. Mergerian, Westinghouse Advanced Technology Laboratories (United States)
E. C. Malarkey, Westinghouse Advanced Technology Laboratories (United States)
R. P. Pautienus, Westinghouse Advanced Technology Laboratories (United States)
J. .C. Bradley, Westinghouse Advanced Technology Laboratories (United States)


Published in SPIE Proceedings Vol. 0176:
Guided Wave Optical Systems and Devices II
Elsa M. Garmire, Editor(s)

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