Recent advances in coherent perfect absorber-lasers and their future applications 相干完美吸收-激光器的最新进展及其未来应用展望

Minye Yang, Zhi lu Ye, Liang Zhu, Mohamed Farhat, Pai Yen Chen

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


In recent years, peculiar physical phenomena enabled by non-Hermitian systems, especially the parity-time (PT)-symmetric systems, have drawn tremendous research interests. Particularly, special spectral degeneracies known as exceptional points (EPs) and coherent perfect absorber-laser (CPAL) points where zero and infinite large eigenvalues coexist are the most popular topics to be studied. To date, the discussions of EPs that serve as transition boundaries between broken PT-symmetry phase and exact PT-symmetry phase have been intensively presented. However, the theoretical analysis and experimental validations of CPAL points are inadequate. Different from EPs, CPAL points, as a special solution of broken PT-symmetry phase, may exhibit even further counterintuitive physical features, which may have significant implications to study non-Hermitian physics. Here, we review some recent advances of CPAL phenomena in different sub-disciplines of physics, including optics, electronics and electromagnetics, and acoustics. Additionally, we also provide an envision of future directions and applications of CPAL systems.
Original languageEnglish (US)
Pages (from-to)3203-3216
Number of pages14
JournalJournal of Central South University
Issue number10
StatePublished - Nov 15 2022

Bibliographical note

KAUST Repository Item: Exported on 2022-11-28

ASJC Scopus subject areas

  • General Engineering
  • Metals and Alloys


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