Frequency selective imaging system

A method consisting of a frequency selective imaging system, the method comprising:

• propagating at least one photon into an input of at least one intensity control device;
• selecting, with the at least one intensity control device, a range of a rate of arrival of the at least one photon that is to be sensed;
• propagating the at least one photon from an output of the at least one intensity control device into an input of at least one polarization control device;
• selecting, with the at least one polarization control device, a polarization of the at least one photon that is to be sensed;
• propagating the at least one photon from an output of the at least one polarization control device onto a collection surface of at least one focusing element;
• focusing, with the at least one focusing element, the at least one photon that is being collected onto at least one frequency selective imager;
• detecting, with at least one frequency selective imager, the at least one photon that was focused by the at least one focusing element;
• emitting, from an output of the at least one frequency selective imager, at least one electrical pulse having a voltage that is proportional to an energy level of the at least one photon;
• processing, with at least one processor, the at least one electrical pulse;
• and
• generating, with the at least one processor, a multi-spectral image from information from the at least one electrical pulse.