Two-dimensional pseudo-random optical phased array based on tandem optical injection locking of vertical cavity surface emitting lasers.

نویسندگان

  • Keyvan Sayyah
  • Oleg Efimov
  • Pamela Patterson
  • James Schaffner
  • Carson White
  • Jean-Francois Seurin
  • Guoyang Xu
  • Alexander Miglo
چکیده

We demonstrate, both theoretically and experimentally, a pseudo-random, two-dimensional optical phased array (OPA) concept based on tandem injection locking of 64-element vertical cavity surface emitting laser (VCSEL) arrays. A low cavity-Q VCSEL design resulted in an injection locking optical power of less than 1 μW per VCSEL, providing large OPA scaling potential. Tandem injection locking of two VCSEL arrays resulted in measured controllable optical phase change of 0-1.6π. A high quality beam formed with suppressed grating lobes due to the pseudo-random array design was demonstrated with performance close to simulated results. A preliminary 2.2° x 1.2° beam steering example using the tandem arrays was also demonstrated.

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عنوان ژورنال:
  • Optics express

دوره 23 15  شماره 

صفحات  -

تاریخ انتشار 2015