Meta-transmitarray offers unprecedented control of light on subwavelength scales
Thursday, May 30, 2013 - 08:00
in Physics & Chemistry
(Phys.org) —The ability to guide, bend and focus light at the nanoscale is a highly sought-after goal in the field of nano-optics. Precise and efficient light control has direct applications in solar cells, holography, nanoscale signal processing, CMOS cameras, and many other areas. In a recent study, a team of engineers has proposed a new technique for controlling light at deeply subwavelength scales using a thin stack of patterned surfaces that the engineers call a "meta-transmitarray." The underlying physics of the new concept is very different from any conventional lens and offers greatly improved efficiency and flexibility for manipulating light transmission at the nanoscale.