Optical focusing based on the planar metasurface reflector with application to trapping cold molecules
| Autor: | Jianping Yin, Yong Xia, Tao Li, Meng Xia, Supeng Xu, Yaling Yin, Weiyang Cai, Haiyu Yu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Focal point
Materials science Field (physics) business.industry Astrophysics::Instrumentation and Methods for Astrophysics Physics::Optics Statistical and Nonlinear Physics Reflector (antenna) 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Numerical aperture Dipole Planar Optics Electric field 0103 physical sciences Physics::Atomic Physics Strong focusing 010306 general physics 0210 nano-technology business |
| Zdroj: | Journal of the Optical Society of America B. 35:3049 |
| ISSN: | 1520-8540 0740-3224 |
| Popis: | We demonstrate theoretically a 2D subwavelength silicon-grating reflector with strong focusing capability and the potential application to an optical dipole trap of cold molecules such as MgF. We study the dependence of the focusing properties of this reflector on its structural parameters, numerical aperture, and fabrication-error tolerance. Our study shows that the reflector delivers high reflectivity and strong focusing performances with the maximum intensity at the focal point over 200 times the incident one. Such a focusing field on the reflector can provide a deep potential to trap cold MgF molecules from a standard magneto-optical trap. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|