Efficient and monolithic polarization conversion system based on a polarization grating
We introduce a new polarization conversion system (PCS) based on a liquid-crystal polarization grating (PG) and louvered wave plate. A simple arrangement of these elements laminated between two microlens arrays results in a compact and monolithic element, with the ability to nearly completely conver...
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| Veröffentlicht in: | Applied optics (2004) 2012-07, Vol.51 (20), p.4852-4857 |
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| container_end_page | 4857 |
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| container_issue | 20 |
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| container_title | Applied optics (2004) |
| container_volume | 51 |
| creator | Kim, Jihwan Komanduri, Ravi K Lawler, Kristopher F Kekas, D Jason Escuti, Michael J |
| description | We introduce a new polarization conversion system (PCS) based on a liquid-crystal polarization grating (PG) and louvered wave plate. A simple arrangement of these elements laminated between two microlens arrays results in a compact and monolithic element, with the ability to nearly completely convert unpolarized input into linearly polarized output across most of the visible bandwidth. In our first prototypes, this PG-PCS approach manifests nearly 90% conversion efficiency of unpolarized to polarized for ±11° input light divergence, leading to an energy efficient picoprojector that presents high efficacy (12 lm/W) with good color uniformity. |
| doi_str_mv | 10.1364/AO.51.004852 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 1559-128X |
| ispartof | Applied optics (2004), 2012-07, Vol.51 (20), p.4852-4857 |
| issn | 1559-128X 2155-3165 1539-4522 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1136413973 |
| source | Alma/SFX Local Collection; Optica Publishing Group Journals |
| subjects | Arrays Color Conversion Diffraction gratings Effectiveness Gratings (spectra) Polarization Wave plates |
| title | Efficient and monolithic polarization conversion system based on a polarization grating |
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