CONTROL OF SPONTANEOUS EMISSION OF ELECTROMAGNETIC WAVE BY PHOTONIC CRYSTALS

光子晶体对电磁波自发发射的控制

• 批准号: 10440121
• 负责人: TAKEDA Mitsuo
• 金额: $ 1.73万
• 依托单位: SHINSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10440121/
• 关键词: PHOTONIC BAND; PHOTONIC CRYSTALS; NONLINEAR OPTICAL EFFECT; THz SPECTROSCOPY; SUB MILLIMETER WAVE EMITTER; RAMAN SCATTERING; CONTROL OF SPONTANEOUS EMISSION; 光混合; TH_z電磁波

(1) The photonic crystals of air-rod simple cubic, triangular, and square lattices were fabricated in silicon, TPX, and LiNbOィイD23ィエD2. Photonic band structure were calculated by the plane wave expansion method. The band gap is confirmed to be open in each crystal.(2) The band gap frequencies were determined by FTIR transmission measurements and the values of frequency is confirmed to show good agreement with those of calculation. The localized mode caused by the line defect is found by FTIR in the pseudo-triangular lattice and that is discussed in terms of the calculation with a harmonic oscillator method.(3) The dispersion relations of the electromagnetic wave in the photonic crystals were determined by THz time domain spectroscopy. The frequency dependence of the phase shift gives the dispersion relation directly.(4) The photo-conductive antenna were fabricated by use of LT-GaAs. THz photo mixture emitter was composed with the photo-conductive antenna and the photonic crystals.(5) The FT-Raman system was composed of a tunable laser and FTIR spectrometer.

(1)用平面波展开法计算了硅、TPX和LiNbO2的空气杆简单立方、三角形和方形晶格的光子晶体的带隙。 (2)通过FTIR透射测量确定了带隙频率，并证实频率值与计算值吻合良好，发现了由线缺陷引起的局域模式。 (3)利用太赫兹时域光谱确定了光子晶体中电磁波的色散关系。相移直接给出色散关系。(4)利用LT-GaAs光敏混合发射器与光导材料组成光电导天线。 (5)FT-Raman系统由可调谐激光器和FTIR光谱仪组成。