Transverse-mode selective resonant grating-mirrors for high power and high brightness emission

The finite angular spectral width of a 2D resonant grating mirror is adjusted to select the fundamental transverse mode of a laser and to filter out higher order modes. The selection principle is explained phenomenologically on a simplified 1D model. The 2D design is made so as to sustain the large...

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Bibliographic Details
Published in:Optics express 2015-06, Vol.23 (13), p.17275-17289
Main Authors: Lyndin, Nikolay, Kämpfe, Thomas, Tonchev, Svetlen, Reynaud, Stephanie, Parriaux, Olivier
Format: Article
Language:English
Subjects:
Optics
Physics
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Summary:The finite angular spectral width of a 2D resonant grating mirror is adjusted to select the fundamental transverse mode of a laser and to filter out higher order modes. The selection principle is explained phenomenologically on a simplified 1D model. The 2D design is made so as to sustain the large field concentration in the grating slab-waveguide mirror, and the technology permitting to obtain the resonant reflection within the gain bandwidth of two types of laser is described. The blank experimental measurements by means of a white light supercontinuum are shown to match the targeted specifications on the resonance spectral position and angular width.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.23.017275