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Reflection and Refraction of an Airy Pulse at a Moving Temporal Boundary
Author(s) -
Cai Wangyang,
Tian Yingying,
Zhang Lifu,
He Hairong,
Zhao Jiajia,
Wang Jin
Publication year - 2020
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.202000295
Subject(s) - optics , physics , reflection (computer programming) , refraction , pulse (music) , refractive index , dispersion (optics) , main lobe , dispersion relation , boundary (topology) , telecommunications , mathematics , mathematical analysis , detector , computer science , antenna (radio) , programming language
Abstract Reflection and refraction of Airy pulses at a moving step refractive‐index boundary are investigated. A comb‐like reflected spectrum and an Airy‐like transmitted spectrum are formed as an Airy pulse crosses a temporal boundary without initial group velocity mismatch or initial central frequency shift. The reflected and refracted pulses are significantly influenced by the location of temporal boundary and time‐dependent refractive index change. The energy of each lobe of the comb‐like reflected spectra can be controlled by changing the value of decay factor of the Airy pulse. In the case of an Airy pulse with an initial launch frequency shift, the reflected and refracted frequency shifts depend on the dispersion relation of the medium. The results can be used in potential applications involving optical manipulation.