Characterization of period variations in diffraction gratings

Optics: measuring and testing – By light interference – Having wavefront division

Reexamination Certificate

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C385S037000

Reexamination Certificate

active

07023562

ABSTRACT:
Methods and systems for interferometrically characterizing diffractive elements are disclosed.

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Ardito et al., “Fabrication of Phase Masks for Fiber . . . ,” Microelectronic Engineering, 46:251-254, 1999.
Barnier et al., “Sub-nanometer metrology of chipred . . . ,” Optics Communications, 170:175-179, 1999.
Christopher Palmer, “Diffraction Grating Handbook, Fourth Edition,” Published by the Richardson Grating Laboratory, 705 St. Paul Street, Rochester, New York 14605, 2000, www.gratinglab.com.
Loewen et al., “Diffraction gratings and applications,” Chapter 11, Marcel Dekker Inc. Publisher, 1999, ISBN 0-8247-9923-2.

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