Gaussian to uniform intensity shaper based on generalized phase contrast.
We show that the generalized phase contrast method (GPC) can be used as a versatile tool for shaping an incident Gaussian illumination into arbitrary lateral beam profiles with uniform intensity. This energy-efficient technique shapes the beam by redistributing light from designated dark regions and homogenizes the beam by redistributing excess energy from the center to the edges. Results from numerical experiments show efficiencies around 84% for various profiles with minimal intensity inhomogeneities.
DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, DK-4000 Roskilde, Denmark.
Darwin
D
Palima
Jesper
J
Glückstad
D003198:Computer Simulation; D005583:Fourier Analysis; D007834:Lasers; D008027:Light; D008029:Lighting / Q000379:methods*; D015233:Models, Statistical; D016011:Normal Distribution; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation; D012815:Signal Processing, Computer-Assisted