Rear-side resonator architecture for the passive coherent combining of high-brightness laser diodes - Institut d'Optique Graduate School Access content directly
Journal Articles Optics Letters Year : 2016

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.
Fichier principal
Vignette du fichier
2016 OptLett Rear side resonator architecture for the passive coherent combining of high-brightness laser diodes (Schimmel et al).pdf (927.42 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01282939 , version 1 (11-03-2016)

Licence

Attribution - NonCommercial - NoDerivatives - CC BY 4.0

Identifiers

Cite

Guillaume Schimmel, Ioana Doyen-Moldovan, Sylvie Janicot, Marc Hanna, Jonathan Decker, et al.. Rear-side resonator architecture for the passive coherent combining of high-brightness laser diodes. Optics Letters, 2016, 41 (5), pp.950-953. ⟨10.1364/OL.41.000950⟩. ⟨hal-01282939⟩
523 View
330 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More