US Patent Issued on April 29 for "Method and apparatus for fabrication of large area 3D photonic crystals with embedded waveguides" (Connecticut, New Mexico Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,287,571, issued on April 29.

"Method and apparatus for fabrication of large area 3D photonic crystals with embedded waveguides" was invented by Steven R. J. Brueck (Albuquerque, N.M.) and Alexander K. Raub (Danbury, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In accordance with some aspects of the present disclosure, a maskless interferometric lithography system for fabricating a three-dimensional (3D) photonic crystal using a multiple two-beam-exposures is disclosed. The system can comprise an illumination system comprising an optical arrangement operable to receive radiation from a radiation source and provide three or more tilted two-beam int...