Phase-only diffractive optical element for improving the beam quality of a vertical-cavity surface-emitting laser array

Authors: Bao N.K.¹; Chen Z.¹; Zhang J.²

Source: Optik – International Journal for Light and Electron Optics, Volume 115, Number 1, May 2004 , pp. 23-27(5)

Publisher: Urban & Fischer

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Abstract:

The propagation of the light beam emitted by a vertical-cavity surface-emitting laser array is numerically simulated in a system, in which the beam is modulated by a phase-only diffractive optical element. The element designed by means of combining simulated annealing algorithm and block iterative projections algorithm can focus the beams array into a narrow peak with low background and keep it in a longer distance without diverging.

Document Type: Research article

DOI: 10.1087/0030-4026-00320

Affiliations: 1: Department of Electronic Engineering, City University of Hong Kong, Hong Kong 2: The Graduate School at Beijing, University of Science and Technology of China, Beijing 100039

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