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Browsing by Subject "Invariant optical fields"

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Tuneable Gaussian to flat-top resonator by amplitude beam shaping

Author: Ngcobo, Sandile ; Ait-Ameur, K ; Litvin, I ; Hasnaoui, A ; Forbes, A Date: Sep 2013 We outline a simple laser cavity comprising an opaque ring and a circular aperture that is capable of producing spatially tuneable laser modes, from a Gaussian beam to a Flat-top beam. The tuneability is achieved by varying the diameter of ... Read more
Tuneable Gaussian to flat-top resonator by amplitude beam shaping using a digital laser

Author: Ngcobo, Sandile ; Ait-Ameur, K ; Litvin, I ; Hasnaoui, A ; Forbes, A Date: Feb 2014 In this paper we experimentally demonstrate a simple laser cavity that produces spatial tuneable laser modes from a Gaussian beam to a Flat-top beam and a Donut-beam. The laser cavity contains an opaque ring and an adjustable circular aperture ... Read more

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Browsing by Subject "Invariant optical fields"

Browsing by Subject "Invariant optical fields"

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