介观相互作用中相位共轭的理论研究
Theoretical Study of Phase Conjugation in Mesoscopic Interaction Volumes
摘要：
为了研究光学近场可能的相位共轭，有必要超越通常应用于相位共轭研究的缓慢变化的包络和电偶极子近似，其中空间非衰减（或至少缓慢衰减）模式混合。本文利用最小耦合哈密顿量建立了简并四波混频的微观理论描述。它是一种半经典描述，其中电磁场被视为经典量，而有源介质被量子力学处理。数值结果给出了一个单级量子阱（完全带内的贡献）和一个两级量子阱（主要是带间的贡献）。讨论了相位共轭场的聚焦问题。（包括丹麦文和英文全文摘要）。
英文摘要：
In order to study the possible phase conjugation of optical near-fields, it is necessary to go beyond the slowly varying envelope- and electric dipole approximations that are normally applied in phase conjugation studies where spatially non-decaying (or at least slowly decaying) modes are mixed. In the present dissertation, the minimal coupling Hamiltonian is used to create a microscopic theoretical description of degenerate four-wave mixing. It is a semiclassical description where the electromagnetic field is treated as a classical quantity and the active medium is treated quantum mechanically. Numerical results are given for a single-level quantum well (exclusively intraband contributions) and for a two-level quantum well (mainly interband contribution). Focusing of a phase conjugated field is also discussed. (Full-length abstracts in Danish and English included).
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
