The experimentand analysis prove thateffective grating couplingcan beachieved through thereasonabledesign of a 2Dgrating for verylong wavelength QWIPs.
The new map is a smart byproduct of the European Space Agency (Esa) telescope's main mission which is to survey the Cosmic Microwave Background, or CMB - a pervasive but faint glow of long-wavelength radiation that comes to us from the very edge of the observable Universe.