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/lp/spie/design-of-multipeak-one-way-light-absorber-based-on-one-dimensional-1raz9LD4Hy
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- Publisher
- SPIE
- Copyright
- © 2020 Society of Photo-Optical Instrumentation Engineers (SPIE)
- ISSN
- 1947-7988
- eISSN
- 1947-7988
- DOI
- 10.1117/1.JPE.10.014501
- Publisher site
- See Article on Publisher Site
Abstract
Abstract.The study of magnetophotonic crystals is usually based on its reflection and transmission of light waves, but its absorption properties are rarely studied. Considering the current high absorptivity of one-way absorbers has one absorption peak, and the optical constants of magnetophotonic crystals are all ideal approximation, we introduce the practical optical constants of silicon carbide (SiC) into the magnetophotonic crystals model. The optical properties are investigated in visible wavelength based on the transformation matrix method, and some parameter effects are also discussed in detail, such as the incidence angle and the thickness of defect layer. The one-dimensional (1-D) magnetophotonic crystal structure was systematically optimized. Then a multipeak one-way light absorber composed of real semiconductor and metal based on 1-D magnetophotonic crystal is further proposed, which makes the channel position of perfect nonreciprocal absorption controllable and the number increased; the influence of incident conditions on the absorption efficiency is greatly weakened and the universality and flexibility of one-way absorber in practice are greatly enhanced. The achievement provides new ideas for the study of nonreciprocal absorbers.
Journal
Journal of Photonics for Energy – SPIE
Published: Jan 1, 2020
Keywords: one-way absorber; one-dimensional magnetophotonic crystal; visible wavelength range; optimal design