Anamorphic concentration of solar radiation beyond the one-dimensional thermodynamic limit.
- 1 August 2000
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 39 (22), 3963-3967
- https://doi.org/10.1364/ao.39.003963
Abstract
We propose and demonstrate a new scheme for anamorphic concentration of a big (40 cm x 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 one-dimensional concentration ratio compared with those of conventional concentrators and 14-fold improvement compared with the one-dimensional thermodynamic limit.Keywords
This publication has 7 references indexed in Scilit:
- High-resolution spectrometry for diffuse light by use of anamorphic concentrationOptics Letters, 1999
- Three-dimensional optical metrology with color-coded extended depth of focus.Optics Letters, 1999
- Two-stage concentrator permitting concentration factors up to 300x with one-axis trackingSolar Energy, 1996
- Collimation of emissions from a high-power multistripe laser-diode bar with multiprism array coupling and focusing to a small spotOptics Letters, 1995
- High-power Nd:YLF laser end pumped by a diode-laser barOptics Letters, 1993
- Concentration and collimation of diffuse linear light sourcesApplied Physics Letters, 1993
- Geometrical transformation of linear diode-laser arrays for longitudinal pumping of solid-state lasersIEEE Journal of Quantum Electronics, 1992