Diamond Raman Waveguide Lasers: Completely Analytical Design Optimization Incorporating Scattering Losses

We report detailed investigation of diamond-on-silica waveguides and their potential for use as Raman lasers. Large cross-sectional area rib waveguides are proposed as a dimension-scalable geometry. Finite element analysis and the beam propagation method are used to assess their guiding properties a...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 2011-08, Vol.47 (8), p.1069-1077
Main Authors: McKnight, L. J., Dawson, M. D., Calvez, S.
Format: Article
Language:English
Subjects:
Beams (radiation)
Cross sections
Diamond-like carbon
Indexes
Integrated optics
Laser modes
lasers
Mathematical analysis
Mathematical models
Optical waveguides
Raman lasers
Scattering
Surface waves
Thresholds
Waveguide lasers
Waveguides
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Summary:We report detailed investigation of diamond-on-silica waveguides and their potential for use as Raman lasers. Large cross-sectional area rib waveguides are proposed as a dimension-scalable geometry. Finite element analysis and the beam propagation method are used to assess their guiding properties and in particular single transverse mode operation. A fully analytical model of scattering losses taking into account the interaction with all surfaces is proposed and exploited in conjunction with an analytical solution of a Raman waveguide laser to optimize the design with respect to threshold or output power of a diamond Raman waveguide laser pumped continuous-wave either at 532 nm or 1064 nm. Results show that thresholds lower than 500 mW and near quantum limit output powers can be obtained for a range of guide dimensions.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2011.2152366