A reflection-type wavelength selective IR emitter is proposed. Surface plasmon polaritons (SPPs), which occur on metallic grating at a wavelength near the pitch of the structure, are used for controlling thermal emissions. An emission peak at a wavelength nearly equal to the period of the grating is observed. As for the other wavelength, which cannot couple with the SPPs, the IR power is confined by the reflectors including the grating. The emitter temperature increases, consuming lower input power with higher power efficiency.
© 2011 Optical Society of America
Original Manuscript: August 25, 2010
Revised Manuscript: December 8, 2010
Manuscript Accepted: December 24, 2010
Published: January 28, 2011
Katsuya Masuno, Shinya Kumagai, and Minoru Sasaki, "Reflection-type wavelength-selective infrared emitter using surface plasmon polaritons," Opt. Lett. 36, 376-378 (2011)