发明名称 |
PLANAR, HIGH NA, LOW LOSS TRANSMITTING OR REFLECTING LENSES USING SUB-WAVELENGTH HIGH CONTRAST GRATING |
摘要 |
Planar lenses and reflectors are described comprising subwavelength high-contrast gratings (HCG) having high index of refraction grating elements spaced apart from one another in straight and/or curved segments and surrounded by low index material. The high-contrast grating is configured to receive an incident wave which excites multiple modes within the high-contrast grating and is focused for reflection and/or transmission by said high contrast grating. The width of the high contrast grating bars vary along a distribution direction of the grating bars which is perpendicular to the length of the grating bars and/or varies along the length of one or more grating bars to focus said reflection and/or transmission. The HCG is configured to provide double focusing, whose use is exemplified within a vertical cavity surface emitting laser (VCSEL) structure using focusing HCG structures for both the top and bottom mirrors.
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申请公布号 |
US2013058370(A1) |
申请公布日期 |
2013.03.07 |
申请号 |
US201213593382 |
申请日期 |
2012.08.23 |
申请人 |
CHANG-HASNAIN CONNIE;CHASE CHRISTOPHER;LU FANGLU;SEDGWICK FORREST G.;KARAGODSKY IGOR;THE REGENTS OF THE UNIVERSITY OF CALIFORNIA |
发明人 |
CHANG-HASNAIN CONNIE;CHASE CHRISTOPHER;LU FANGLU;SEDGWICK FORREST G.;KARAGODSKY VADIM |
分类号 |
H01S5/187;G02B5/18 |
主分类号 |
H01S5/187 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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