Mode shaping at a given distance outside a resonator with diffractive optical elements

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Published 28 July 2003 • Published under licence by IOP Publishing Ltd
, , Citation S H Tao and X-C Yuan 2003 J. Opt. A: Pure Appl. Opt. 5 511 DOI 10.1088/1464-4258/5/5/312

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Author affiliations

1 Photonics Research Centre, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore

2 Author to whom any correspondence should be addressed.

Dates

  1. Received 25 September 2002
  2. Accepted 2 July 2003
  3. Published

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Abstract

We designed an intra-cavity mode shaping system to get a desired intensity profile at a given distance from the exit window of a laser resonator. The diffractive optical element (DOE) in the resonator forms a real-valued output mode and another DOE adds the required phase shifts to the output mode. The simulations show the formation of a flat-top and doughnut-like shape at the given distance outside the resonator.

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