| 1. |
- Tian, Jie, et al.
(författare)
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Direct characterization of focusing light by negative refraction in a photonic crystal flat lens
- 2008
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Ingår i: Applied Physics Letters. - New York : AIP Publishing. - 0003-6951 .- 1077-3118. ; 93:19
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Tidskriftsartikel (refereegranskat)abstract
- We report experimental measurements of the field distribution of the light spot focused by a two-dimensional photonic crystal flat lens at wavelengths 1.51-1.58 mu m. The photonic crystal slab is fabricated on a silicon-on-insulator substrate by focused-ion-beam direct milling. We confirm the light focusing by the photonic crystal slab through direct observation of the light spot entering into free space at the end facet of the slab lens. The beam profiles as the function of lateral position are measured and the minimal full width half maximum of the beam at 1.2 mu m (0.77 lambda) is obtained.
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| 2. |
- Zhao, Shuxi, 1944-, et al.
(författare)
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Colour control and selectivity in TiAlN solar-thermal absorbers
- 2011
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Ingår i: Advances in Optical Thin Films IV. Optical Systems Design 2011, 5 September 2011, Marseille, France. - Washington : SPIE - International Society for Optical Engineering. - 9780819487940 ; , s. 81680G-1-81680G-9
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Konferensbidrag (refereegranskat)abstract
- Optical constants for simulations were obtained by R- and T-measurements on TiAlN thin films deposited on Corning 7059 glass. The model parameterized free carrier effects and an inter-band excitation. The calculations demonstrated that the colour effects are due to interference and inter-band absorption around 500 nm in a single layer coating. The peak shifts with the thickness of the thin film which gives a simple way to obtain different colours. Solar absorptance of 86 % can be reached already for a single TiAlN-film on an Al substrate.
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| 3. |
- Zhao, Shuxi, 1944-, et al.
(författare)
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Options for Reststrahlen Materials in Optical Surfaces and Filters
- 2010
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Ingår i: Chinese Optics Letters. - Shanghai, China : Chinese Laser Press. - 1671-7694. ; 8:Supplement 1, s. 119-124
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Tidskriftsartikel (refereegranskat)abstract
- The current potential applications of reststrahlen bands in optical surfaces and components are reviewed. This type of interval with metallic-like high reflectance has been used for monochromatization in infrared and when wavelength selective low emittance is needed for frost prevention or infrared signature reduction. Associated features, including a narrow reflectance minimum for a wide range of angles of incidence, are potentially useful.
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