Enhanced wavelength selective infrared emission using surface plasmon polariton and thermal energy confined in micro-heater

A new surface plasmon polariton (SPP) based wavelength selective IR emitter is combined with micro-heater. IR emitted from the micro-heater is basically confined except SPP propagation on the metal grating carrying IR energy to the outside. The limited condition for SPP excitation realizes the narrow wavelength filtering. SPP related emission is obtained having the peak width similar order compared with the bandwidth of gas absorption. Since the micro-heater can minimize the thermal conduction loss, the high efficiently is expected at SPP related wavelength.