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Vitaliy Goryashko STINT meeting
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Vitaliy Goryashko STINT meeting
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Initial objectives Employ plasmonic and geometrical resonances to - - PowerPoint PPT Presentation
Initial objectives Employ plasmonic and geometrical resonances to - - PowerPoint PPT Presentation
Initial objectives Employ plasmonic and geometrical resonances to enhance magneto-optical effects Investigate layouts for efficient rotation of polarization Magnetically tunable lens based on a gradient metasurface 1 Vitaliy Goryashko
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Vitaliy Goryashko STINT meeting
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Transmission of a Gaussian beam through a lens
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Gaussian beam Lens The effect of the lens is an additional phase factor −
𝑙𝜍2 2𝑔 .
The beam width just before and after the lens is the same.
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Vitaliy Goryashko STINT meeting
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Transmission of a Gaussian beam through a lens: NO PANIC!
𝑙𝑨 + 𝑙𝜍2 2𝑆 + 𝜔 − 𝑙𝜍2 2𝑔 ⇒ 1 𝑆′ = 1 𝑆 + 1 𝑔 After a lens the total phase reads 𝑙𝑨 + 𝑙𝜍2 2𝑆′ + 𝜔 Here 𝑨0 ≡ 𝑨𝑆 𝑋′ = 𝑋 𝑆 ⇒ 𝑆′ new width 𝑋
′
new focus 𝑨′ new Rayleigh 𝑨0′
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Vitaliy Goryashko STINT meeting
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