Coherent Perfect Absorption in Symmetric Optical Lattice

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• 作者：Anjana Sinha ; Rajkumar Roychoudhury
• 关键词：symmetric periodic optical lattice ; Scattering ; Coherent perfect absorption ; Spectral singularity ; Reflection ; Transmission
• 刊名：International Journal of Theoretical Physics
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：54
• 期：11
• 页码：3991-4004
• 全文大小：2,382 KB
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• 作者单位：Anjana Sinha (1)
  Rajkumar Roychoudhury (2)
  
  1. Department of Instrumentation Science, Jadavpur University, Kolkata, 700 032, India
  2. Advanced Centre for Nonlinear and Complex Phenomena, 1175 Survey Park, Kolkata, 700 075, India
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Physics
  Quantum Physics
  Elementary Particles and Quantum Field Theory
  Mathematical and Computational Physics
  
• 出版者：Springer Netherlands
• ISSN：1572-9575

文摘

In this work we study scattering in a symmetric periodic optical lattice, when two coherent beams are incident on it from two opposite directions. We focus our attention on both broken as well as unbroken phase, with special emphasis on spectral singularity. This is another example of an analytically solvable model, apart from the symmetric Scarf II potential discussed in ref. Ahmed (Phys. Rev. A 81, 022102 (2014)), which exhibits the phenomenon of Coherent Perfect Absorption (CPA) with lasing, in the domain of broken symmetry. At the same time, CPA is neither possible for unbroken symmetry, nor at the transition point. Keywords symmetric periodic optical lattice Scattering Coherent perfect absorption Spectral singularity Reflection Transmission