A two-element holographic optical system is described for converting an elliptically shaped Gaussian-profile laser beam into a rectangularly shaped beam that is uniform in amplitude and phase in the nearfield. Theoretical analysis, design considerations, and experimental results are presented for a compact converter system of less than 6 cm in length.
Carl C. Aleksoff,
Kenneth K. Ellis,
Bradley D. Neagle,
"Holographic conversion of a Gaussian beam to a near-field uniform beam," Optical Engineering 30(5), (1 May 1991). https://doi.org/10.1117/12.55833
Carl C. Aleksoff, Kenneth K. Ellis, Bradley D. Neagle, "Holographic conversion of a Gaussian beam to a near-field uniform beam," Opt. Eng. 30(5) (1 May 1991)