Title:
Heat radiation light source
Document Type and Number:
Japanese Patent JP6227627
Kind Code:
B2
Abstract:
The present invention provides a thermal emission source that allows a wider range of material choices than those of conventional techniques, so that light having a desired peak wavelength can easily be obtained. A thermal emission source 10 includes a thermo-optical converter composed of an optical structure in which a refractive index distribution is formed in a member 11 made of an intrinsic semiconductor so as to resonate with light of a shorter wavelength than a wavelength corresponding to a bandgap of the intrinsic semiconductor. When heat is externally supplied to the thermo-optical converter, light having a spectrum in a band of shorter wavelengths than a cutoff wavelength is produced by interband absorption in the intrinsic semiconductor, and light of a resonant wavelength » r in the wavelength band, the light causing resonance in the optical structure, is selectively intensified and emitted as thermal emission. In the present invention, an intrinsic semiconductor that provides a wide range of material choices is used, so that a thermal emission source that produces narrow-band light having a desired peak wavelength can easily be obtained.
Inventors:
Susumu Noda
Tatsuya Shibahara
De Zoi Samenaka
Taku Asano
Keisuke Kitano
Katsuyoshi Suzuki
Takuya Inoue
Kenji Ishizaki
Tatsuya Shibahara
De Zoi Samenaka
Taku Asano
Keisuke Kitano
Katsuyoshi Suzuki
Takuya Inoue
Kenji Ishizaki
Application Number:
JP2015504273A
Publication Date:
November 08, 2017
Filing Date:
February 28, 2014
Export Citation:
Assignee:
Japan Science and Technology Agency
International Classes:
H01K1/14; H01K11/00; H02S10/30
Domestic Patent References:
| JP2005535919A |
Other References:
芝原達哉 他,狭帯域近赤外Siフォトニック結晶熱輻射光源の検討,第73回応用物理学会学術講演会講演予稿集,公益社団法人応用物理学会,2012年,04-026
Menaka De Zoysa et al,Conversion of broadband to narrowband thermal emission through energy recycling,Nature Photonics,2012年 8月,vol.6,pp.535-539
Menaka De Zoysa et al,Conversion of broadband to narrowband thermal emission through energy recycling,Nature Photonics,2012年 8月,vol.6,pp.535-539
Attorney, Agent or Firm:
Kyoto International Patent Office