CONTROL OF SPONTANEOUS EMISSION OF ELECTROMAGNETIC WAVE BY PHOTONIC CRYSTALS

（1） The photonic crystals of air-rod simple cubic， triangular， and square lattices were fabricated in silicon， TPX， and LiNbOイイD23イエD2。光子波段结构是由平面波扩展法计算的。这个乐队的缺口被确认在每个水晶中开放。（2）通过FTIR传输测量和频率的价值来确定的带隙频率被确认为与那些计算达成了良好的协议。由于线路缺陷而导致的本地化模式被发现在假三角形晶格中，并且它被讨论在使用谐波振荡器方法计算的条件下。（3）光子晶体中电磁波的分散关系是由太赫兹时域光谱法确定的。“相位转换的频率依赖性直接导致了分歧关系。”（4）光诱导天线是由LT-GaAs的用途制造的。太赫兹照片混合发射器是由光电感应天线和光电晶体组成的。FT-Raman系统是由可调激光和FTIR光谱仪组成的。

(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.