Low coherence-induced resonance in double-layer structures having parity-time symmetry

Brandao P. A.; Mendonca J. P.; Cavalcanti S. B.

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Low coherence-induced resonance in double-layer structures having parity-time symmetry

机译：具有奇偶校正时间对称的双层结构中的低相干诱导的共振

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We derive simple formulas for the transmittance T and reflectance R of Gaussian-Schell beams incident upon any stratified dielectric structure by using second-order classical coherence theory in the space-frequency picture. The formalism is applied to a particular structure consisting of a double layer, with balanced gain and loss, satisfying parity-time symmetry conditions. It is shown that sources with a low degree of spatial coherence, on the order of the wavelength, can induce large resonant peaks in the transmitted and reflected amplitudes. The resonance peaks vanish as the spatial coherence increases. (C) 2021 Optical Society of America

机译：利用二阶经典相干理论，推导了高斯-谢尔光束在任意分层介质结构上的透射比T和反射比R的简单公式。这种形式主义被应用于由双层构成的特殊结构，增益和损耗平衡，满足奇偶时间对称条件。结果表明，在波长量级上，空间相干度较低的光源可以在透射和反射振幅中产生较大的共振峰。随着空间相干性的增加，共振峰消失。（2021）美国光学学会

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《Optics Letters》 |2021年第4期|共4页
作者
Brandao P. A.; Mendonca J. P.; Cavalcanti S. B.;
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Univ Fed Alagoas Inst Fis BR-57072900 Maceio Alagoas Brazil;

Univ Fed Alagoas Inst Fis BR-57072900 Maceio Alagoas Brazil;

Univ Fed Alagoas Inst Fis BR-57072900 Maceio Alagoas Brazil;

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正文语种 eng
中图分类计量学;光学;
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Low coherence-induced resonance in double-layer structures having parity-time symmetry

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