激光技术
激光技術
격광기술
LASER TECHNOLOGY
2010年
1期
75-77
,共3页
光电子学%面心立方3维光子晶体%平面波展开法%能带结构%带隙
光電子學%麵心立方3維光子晶體%平麵波展開法%能帶結構%帶隙
광전자학%면심립방3유광자정체%평면파전개법%능대결구%대극
optoelectronics%face-centered cubiclattice 3-D photonic crystal%plane wave expansion method%band structure%band gap
为了数值研究面心立方晶格球形散射体3维光子晶体能带结构,采用平面波展开方法分别计算了空气中的介质球与介质中的空气球在不同参量下的能带.结果表明,空气中的介质球不论选任何参量都不出现完全禁带,介质中的空气球在选取适当参量时能出现禁带,禁带宽度与适当空气球半径、适当基质介电常数的关系相似,禁带位置中心坐标与适当空气球半径、适当基质介电常数的关系相反.此结论推广和补充了相关文献的研究.
為瞭數值研究麵心立方晶格毬形散射體3維光子晶體能帶結構,採用平麵波展開方法分彆計算瞭空氣中的介質毬與介質中的空氣毬在不同參量下的能帶.結果錶明,空氣中的介質毬不論選任何參量都不齣現完全禁帶,介質中的空氣毬在選取適噹參量時能齣現禁帶,禁帶寬度與適噹空氣毬半徑、適噹基質介電常數的關繫相似,禁帶位置中心坐標與適噹空氣毬半徑、適噹基質介電常數的關繫相反.此結論推廣和補充瞭相關文獻的研究.
위료수치연구면심립방정격구형산사체3유광자정체능대결구,채용평면파전개방법분별계산료공기중적개질구여개질중적공기구재불동삼량하적능대.결과표명,공기중적개질구불론선임하삼량도불출현완전금대,개질중적공기구재선취괄당삼량시능출현금대,금대관도여괄당공기구반경、괄당기질개전상수적관계상사,금대위치중심좌표여괄당공기구반경、괄당기질개전상수적관계상반.차결론추엄화보충료상관문헌적연구.
The band gap structure of face-centered cubic lattice of 3-D photonic crystal with sphere scatter was studied with the plane wave expansion method.The energy bands of the air sphere in medium and the medium sphere in air with different parameters were calculated.The results obviously prove that the wholly band gap of air sphere in medium will never exist at any parameter,and the wholly band gap of medium sphere in air will exist when suitable parameters are chosen.The relation between the width of band gap and the air sphere ' s radius is similar to that of the substrate ' s dielectric constant,while the relation between the band gap ' s center position and the radius of air sphere is dissimilar to that of the dielectric constant of the substrate.The conclusion extends and renews the relative fields.