Focusing and collimating laser diodes and laser diode arrays

Computer-generated holograms for laser diode (LD) focusing are described. A quantitative description of design tradeoffs is given. The LD parameters (not parallel input light) are included. Multiple CGH lenses, nonequal focal lengths in x and y, positive and negative focal lengths in the same lens, circular focal spots and equal variance focal spots, attention to focusing angles, and 1-D LD array collimation for optical data processing applications are considered.

[1]  Neal C. Gallagher,et al.  Diffractive Optics: Scalar And Non-Scalar Design Analysis , 1989, Photonics West - Lasers and Applications in Science and Engineering.

[2]  David Casasent,et al.  New Fresnel CGHs For Lensless Optical Systems And Their Applications , 1989, Photonics West - Lasers and Applications in Science and Engineering.