In this Letter, the enhancement of thermal radiation in the terahertz region is presented theoretically by using the spoof surface plasmon mode on the microcavity array. We found that the terahertz wave is radiated selectively in a vertical direction. As a result, a quasi-monochromatic terahertz source can be created.
© 2011 Optical Society of America
Original Manuscript: October 21, 2010
Manuscript Accepted: January 17, 2011
Published: March 10, 2011
Yosuke Ueba, Junichi Takahara, and Tadao Nagatsuma, "Thermal radiation control in the terahertz region using the spoof surface plasmon mode," Opt. Lett. 36, 909-911 (2011)