Excellent light-directing abilities are demonstrated by well-designed three-dimensional micrometer-sized parabolic mirrors that are fabricated by direct laser writing and subsequent surface coating of titanium and silver. The full-width at half-maximum of the measured light divergence for the mirrors with different geometries is much less than 20 μm, even when the height is up to 130 μm. These results are beneficial for developing highly collimating light-emitting diodes. The simulation for the mirrors reveals that the electric field intensity distribution is highly confined toward the central axis of the mirrors, which is consistent with the experimental results.
© 2013 Optical Society of America
Lasers and Laser Optics
Original Manuscript: June 14, 2013
Revised Manuscript: July 10, 2013
Manuscript Accepted: July 22, 2013
Published: August 15, 2013
Wensheng Yan, Md Muntasir Hossain, and Min Gu, "High light-directing micrometer-sized parabolic mirror arrays," Opt. Lett. 38, 3177-3180 (2013)