摘要
从理论上研究了厚度梯变的一维光子晶体中的光学布洛赫振荡 ,利用传输矩阵和散射态方法讨论了该结构的透射谱特性和其中的电场随时间和空间的演变过程。研究表明 ,一束超快的高斯脉冲在该准周期的光学超晶格结构中能够形成光学微带结构和太拉赫兹频段的光学布洛赫振荡 ,并可望应用于太拉赫兹振荡源。
The photonic crystal miniband structures for generating terahertz optical oscillation were investigated theoretically. For this purpose a possible photonic band-gap configration, which are with a thickness gradual variation of the crystal cell were proposed. Transmission property and time-resolved propagation in this structure were studied in detail by the transfer matrix method and by the scattering state technique. The photonic Wannier-Stark ladder and optical Bloch oscillation with a terahertz frequency are predicted, and quantitatively agree with the availabe experiments. The photonic crystal miniband structure may therefore be used to develope a terahertz oscillator.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2004年第3期592-593,共2页
Chinese Journal of Rare Metals
基金
国家自然科学基金重大基金 ( 2 0 0 1CCA0 2 80 0 )
国家科技部基础研究重大项目前期研究专项 ( 2 0 0 1CCA0 2 80 0G)
973项目( 2 0 0 0 0 683 )
上海光计划专项基金 ( 0 116610 75 )资助
关键词
光子晶体
太拉赫兹
光学布洛赫振荡
photonic crystal
terahertz
photonic Bloch oscillation
