|発明の名称||TWO-DIMENSIONAL PHOTONIC CRYSTAL HEAT RADIATION LIGHT SOURCE|
PROBLEM TO BE SOLVED: To provide a heat radiation light source, capable of providing light of a wavelength of a specific narrow band.
SOLUTION: Two-dimensional photonic crystals are formed on a slab 21 having a quantum well structure obtained by alternately laminating a first semiconductor layer 211 and a second semiconductor layer 212 having partially overlapped electron band gaps by periodically forming pores 22 therein. A photonic band gap related to TM polarization as it includes a transition energy between a plurality of sub-bands of the quantum well is formed by appropriately arranging the pores 22. A spot-like defect 23 having a defect level corresponding to the energy width and a form asymmetric to the direction vertical to the slab is disposed within the slab 21. When this light source is heated, light of a wavelength corresponding to the transition between sub-bands is generated, and this light is taken through the defect 23 in the direction vertical to the slab 21.
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