TITLE:
Designs of Two-Element Optical Refracting System to Achieve Uniform Laser Beam Profile
AUTHORS:
Abdallah K. Cherri, Nabil I. Khachab, Mahmoud K. Habib
KEYWORDS:
Annular Laser Beam, Refracting System, Lens Design
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.5 No.12,
December
28,
2017
ABSTRACT: Various specific laser irradiance distribution
outputs are needed in many applications. To fulfill this need, a detailed
step-by-step design procedure for split refracting system is proposed for three
types of laser beams transformation: 1) Annular-uniform-to-uniform; 2) Annular-Gaussian-to-uniform; and 3) Gaussian-to-uniform to obtain the required
laser irradiance distributions. Mathematical expressions of the two
Plano-aspheric surfaces are derived for each type. The proposed designs take
into account few important parameters such as the system length, the surfaces
radii of curvature, the annular beam starting cone angle, and the beams power
ratio. Further, the proposed designs are much better than the ones, which were
previously reported