Cloaking of objects from electromagnetic fields by inverse design of scattering optical elements

Metamaterials have been shown to revolution the control of electromagnetic waves in the microwave region showing unnatural phenomena such as negative refraction. Recently the freedom of design provided by metamaterials was exploited to design cloaking devices. In this work the author presents an alternative approach toward cloaking in the near infrared wavelength region by using inverse designed scattering optical elements. Two devices, measuring a few microns in size, are computer generated and numerically investigated. The results show that it is possible to isolate a 1 mu m(2) area by guiding the a plane incident wave of the wavelength 1550 nm around it. (c) 2007 Optical Society of America.