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Journal articles
Rear-side resonator architecture for the passive coherent combining of high-brightness laser diodes
Abstract : We describe a new coherent beam combining architecture based on passive phase-locking of emitters in an extended cavity on their rear facet, and their coherent combination on the front facet. This rear-side technique provides strong optical feedback for phase-locking while maintaining a high electrical-to-optical efficiency. Two high-brightness high-power tapered laser diodes are coherently combined using a Michelson-based cavity – the combining efficiency is above 82% and results in an output power of 6.7 W in a nearly diffraction-limited beam with an M²4σ ≤ 1.2. A semi-active automatic adjustment of the current enhances the long-term stability of the combination, while the short-term stability is passively ensured by the extended cavity. This new laser configuration exhibits the simplicity of passive self-organizing architectures, while providing a power conversion efficiency of 27% that is comparable to master-oscillator power amplifier architectures.
Cited literature [16 references]
https://hal-iogs.archives-ouvertes.fr/hal-01282939
Contributor : Gaëlle Lucas-Leclin <>
Submitted on : Friday, March 11, 2016 - 11:10:10 AM
Last modification on : Saturday, October 10, 2020 - 2:14:02 PM
Long-term archiving on: : Sunday, November 13, 2016 - 7:40:20 AM
Contributor : Gaëlle Lucas-Leclin <>
Submitted on : Friday, March 11, 2016 - 11:10:10 AM
Last modification on : Saturday, October 10, 2020 - 2:14:02 PM
Long-term archiving on: : Sunday, November 13, 2016 - 7:40:20 AM
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2016 OptLett Rear side resonat...
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