Light transmission coefficients by subwavelength aluminum gratings with dielectric layers


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Аннотация

Spectral positions of plasmon resonances related to boundaries between a thin aluminum layer and dielectrics (air, glass, VDF–TrFE 65/35 ferroelectric copolymer, and indium tin oxide (ITO)) have been determined in the transmission spectra of aluminum gratings of three types with 30 × 30 μm2 dimensions and 350-, 400-, and 450-nm line periods. Experimental results agree well with spectral positions of plasmon resonances calculated for the normal incidence of TM-polarized light. In addition, maximum values of transmission coefficients in the region of λ ≈ 900–950 nm have been determined for glass–Al–copolymer and glass–ITO–Al–copolymer structures. These values are close to 100%, which shows that the effective optical aperture is two times greater than the geometric areas of slits.

Авторлар туралы

L. Blinov

Shubnikov Institute of Crystallography (Crystallography and Photonics Federal Research Center)

Хат алмасуға жауапты Автор.
Email: lev39blinov@gmail.com
Ресей, Moscow, 119333

V. Lazarev

Shubnikov Institute of Crystallography (Crystallography and Photonics Federal Research Center)

Email: lev39blinov@gmail.com
Ресей, Moscow, 119333

S. Yudin

Shubnikov Institute of Crystallography (Crystallography and Photonics Federal Research Center)

Email: lev39blinov@gmail.com
Ресей, Moscow, 119333

V. Artemov

Shubnikov Institute of Crystallography (Crystallography and Photonics Federal Research Center)

Email: lev39blinov@gmail.com
Ресей, Moscow, 119333

S. Palto

Shubnikov Institute of Crystallography (Crystallography and Photonics Federal Research Center)

Email: lev39blinov@gmail.com
Ресей, Moscow, 119333

M. Gorkunov

Shubnikov Institute of Crystallography (Crystallography and Photonics Federal Research Center)

Email: lev39blinov@gmail.com
Ресей, Moscow, 119333

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