Engineering space-variant inhomogeneous media for polarization control.
Novel devices for converting a linear polarization state to radial or azimuthal polarization states are realized by use of space-variant inhomogeneous media on a subwavelength scale. The two designs presented use form birefringence to locally transform the polarization state. The devices are fabricated in a GaAs substrate for operation in the far-infrared wavelength range. The experimental characterization is in good agreement with the designs, demonstrating high conversion efficiency.
Levy
Uriel
U
Department of Electrical and Computer Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0407, USA. ulevy@ece.ucsd.edu
Tsai
Chia-Ho
CH
Pang
Lin
L
Fainman
Yeshaiahu
Y