摘要
在实验上研究了不同材料构成的一维窄带光子晶体带隙特性,采用电子束热蒸发技术,制备了一系列可见光范围内的窄带光子晶体反射镜。实验结果表明:高低折射率比值能够影响光子晶体对相应频率光的抑制能力。折射率比值恒定时,随周期数的增多,最大反射率增大,带隙宽度减小;对于折射率比值不同的光子晶体,折射率比值越小,带隙越窄,达到高反射率所需的周期数目越多。通过构建异质结构光子晶体,显著缩小了光子晶体带隙,并使其在短周期内实现了窄帯高反射率。
The characteristics of one-dimensional narrow-band photonic crystal including different materials are primarily studied based on experiment. By the means of the electron beam evaporation, a series of narrow band photonic crystal reflectors are prepared in the visible light. The experimental results show that the refractive index ratio can affect inhibition ability of light wave at the corresponding frequency of the photonic crystal. For the same refractive index ratio, the maximum reflectivity is increasing with increasing of periods while band gap is decreasing. For the different refractive index ratio, the smaller the refractive index ratio, the narrower the photonic crystal band gap, the more periods are required to achieve the highest reflectance. Moreover, a hetero structure photonic crystal are also constructed, which can significantly narrow the photonic band gap of photonic crystal, realizing a narrow high reflectivity of the photonic crystal mirror in a shorter period.
出处
《激光与光电子学进展》
CSCD
北大核心
2015年第11期222-227,共6页
Laser & Optoelectronics Progress
基金
国家自然科学基金(61275147)
山东省科技攻关计划(2010GGX10127)
山东省自然科学基金(ZR2012AL11
ZR2013EML006)
山东省‘泰山学者’建设工程专项经费
聊城大学重点科研基金
关键词
光学器件
光子晶体
电子束蒸发
光子禁带
异质结构
optical devices
photonic crystal
electron beam evaporation
photonic band gap
hetero structure
