Focusing and phase compensation of paraxial Hermite-Gaussian and Laguerre-Gaussian beams by a negative refractive index material slab

zhang kangkang; luo hailu; wen shuangchun

Volume 22 Issue 08

Jul. 2010

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zhang kangkang, luo hailu, wen shuangchun. Focusing and phase compensation of paraxial Hermite-Gaussian and Laguerre-Gaussian beams by a negative refractive index material slab[J]. High Power Laser and Particle Beams, 2010, 22.

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Focusing and phase compensation of paraxial Hermite-Gaussian and Laguerre-Gaussian beams by a negative refractive index material slab

1.
Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education,School of Computer and Communication,Hunan University,Changsha 410082,China

Publish Date: 2010-07-12

Abstract

Abstract

According to angular spectrum representation, formalisms describing paraxial Hermite-Gaussian and Laguerre-Gaussian beams propagating through an isotropic negative refractive index material (NIM) slab are presented. Focusing and phase compensation of paraxial Hermite-Gaussian and Laguerre-Gaussian beams by the slab are investigated. The phase difference of beams caused by Gouy phase shift in air can be compensated by the inverse Gouy phase shift in NIM, thus the phase difference between the object plane and the image equals to zero in certain matching conditions. If conditions of focusing and phase compensation are satisfied simultaneously, intensity and phase distribution at object plane can be reconstructed at the image plane.
- negative refractive index material,
- slab,
- focus,
- phase compensation

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