Abstract
We propose and demonstrate a new scheme for anamorphic concentration of a big (40 cm × 40 cm) diffuse light source to achieve an extremely high concentration in one lateral direction at the expense of that in the other direction, to preserve the total (two-dimensional) optical brightness. Such anamorphic concentration is achieved by a combination of two conventional two-dimensional concentrators and a properly designed retroreflector array. Our experiments in search of a diffuse white-light source with properties comparable with those of solar radiation have yielded 28-fold improvement of the onedimensional concentration ratio compared with those of conventional concentrators and 14-fold improvement compared with the one-dimensional thermodynamic limit.
| Original language | English |
|---|---|
| Pages (from-to) | 3963-3967 |
| Number of pages | 5 |
| Journal | Applied Optics |
| Volume | 39 |
| Issue number | 22 |
| DOIs | |
| State | Published - 1 Aug 2000 |
| Externally published | Yes |