Abstract

Laser diode arrays (LDAs) can generate coherent light beams of high power. Unfortunately, LDAs generate poor quality output beams, which cannot be properly collimated by conventional diode laser optics. In order to improve the optical quality of the output, Veldkamp et al. [1] have proposed different possibilities using binary optical elements. Our approach is based on the tandem component described in Ref. ², but it uses a simple phase plate and a continuous surface relief-element for the fan-in of the N beams. Theory for the design and the realization of the diffractive optical elements (DOEs), simulated results for the performance of the system, as well as experimental results for a compact set-up will be presented.

© 1992 Optical Society of America