期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 23, 期 22, 页码 1661-1663出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2011.2166150
关键词
Gas sensor; infrared (IR) emitter; multiwavelength; surface plasmon polaritons (SPPs)
资金
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), High-Tech Research Center
Multiwavelength selective infrared (IR) emission utilizing reflection type gratings is proposed. Surface plasmon polariton (SPP) is excited on the metallic grating by IR having the wavelength nearly equal to the grating pitch. The SPP carries IR energy from the thermal source to the outside. The grating element with two different pitches is combined with a single thermal source. Emission peaks at wavelengths corresponding to the pitches are confirmed. CO gas is confirmed to absorb the output IR at the wavelength of an emission peak following the Lambert-Beer law.
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