Reflective diffraction with high efficiency and beam splitter by metal-mirror-based grating

• Autorzy: Wang, B. , Lei, L. , Chen, L. , Zhou, J.
• Języki publikacji: EN

Abstrakty

EN

It is interesting and desirable to achieve two functions of high efficiency and two-port output with one reflective grating, which is not easy to acquire by multilayer coatings. We describe the reflective high efficiency element and the two-port beam splitter by the metal-mirror-based grating. By modal method, the design guideline is proposed according to the two-beam interference of the excited modes by incident TE and TM polarizations. Using rigorous coupled-wave analysis (RCWA), accurate grating parameters are optimized by numerical calculation. This indicates that wideband property can be achieved for such a reflective dual-function grating. Furthermore, the element can also be used for beam splitting for TE polarization with the pre-determined angle of incidence. With merits of wideband and so many functions, the reflective elements presented should be useful in a variety of optical systems.

Słowa kluczowe

EN

modal method; rigorous coupled-wave analysis; metal-mirror-based grating; high efficiency; beam splitter

• Czasopismo: Optica Applicata
• Rocznik: 2012
• Tom: Vol. 42, nr 3
• Strony: 473-479
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Wang, B.

autor

Lei, L.

autor

Chen, L.

autor

Zhou, J.

• School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China

Bibliografia

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