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Journal Articles Optics Letters Year : 2003

Improvement of spatial beam quality of laser sources with an intracavity Bragg grating

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Abstract

We demonstrate a novel method for improvement of spatial beam quality by use of the angular selectivity of a thick phase grating inserted into various laser cavities. Preliminary experiments with an intentionally degraded beam from a Nd:YVO4 laser have enhanced beam propagation factor M2 by a factor of 4.5. Operation with a broad-area laser diode in an external cavity with a thick grating was achieved. We obtained 100 mW of cw power in a beam with an M2 of 1.3. Moreover, a reduction of the output spectrum by as much as a factor of 3.8 was obtained
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Dates and versions

hal-00701623 , version 1 (25-05-2012)

Identifiers

  • HAL Id : hal-00701623 , version 1

Cite

Sylvie Yiou, François Balembois, Patrick Georges, Jean-Pierre Huignard. Improvement of spatial beam quality of laser sources with an intracavity Bragg grating. Optics Letters, 2003, 28 (4), pp.242-244. ⟨hal-00701623⟩
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