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 one-dimensional concentration ratio compared with those of conventional concentrators and 14-fold improvement compared with the one-dimensional thermodynamic limit.
© 2000 Optical Society of AmericaFull Article | PDF Article
OSA Recommended Articles
N. Davidson, L. Khaykovich, and E. Hasman
Opt. Lett. 24(24) 1835-1837 (1999)
J. Opt. Soc. Am. 72(3) 380-385 (1982)
Nándor Bokor and Nir Davidson
J. Opt. Soc. Am. A 19(12) 2479-2483 (2002)