2 W single-longitudinal-mode Yb: YAG distributed-feedback waveguide laser

Thomas Calmano, Martin Ams, Peter Dekker, Michael J. Withford, Christian Kränkel

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Single longitudinal mode (SLM) lasers are important tools for many scientific and commercial applications. SLM operation can be achieved in distributed-feedback (DFB) lasers based on Bragg structures. Semiconductor waveguide DFB lasers are well-established devices, but their output power is limited to a few hundred milliwatts. DFB lasers have also been demonstrated in dielectric waveguides. However, in this case the output power was even lower. Here we present the first monolithic Yb:YAG DFB laser. The waveguide and the DFB structure were fabricated in the volume of an Yb:YAG crystal by ultrafast laser inscription. The DFB laser delivered 2 W of output power at a slope efficiency of 61% in SLM operation under pumping with an optically pumped semiconductor laser. This power level outperforms previously demonstrated dielectric DFB waveguide lasers by nearly an order of magnitude. Our approach paves the way for compact, robust, and highly efficient high-power SLM laser sources.

LanguageEnglish
Pages2734-2737
Number of pages4
JournalOptics Letters
Volume42
Issue number14
DOIs
Publication statusPublished - 15 Jul 2017

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waveguide lasers
distributed feedback lasers
yttrium-aluminum garnet
laser modes
output
dielectric waveguides
YAG lasers
pumping
semiconductor lasers
slopes
waveguides
crystals
lasers

Cite this

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abstract = "Single longitudinal mode (SLM) lasers are important tools for many scientific and commercial applications. SLM operation can be achieved in distributed-feedback (DFB) lasers based on Bragg structures. Semiconductor waveguide DFB lasers are well-established devices, but their output power is limited to a few hundred milliwatts. DFB lasers have also been demonstrated in dielectric waveguides. However, in this case the output power was even lower. Here we present the first monolithic Yb:YAG DFB laser. The waveguide and the DFB structure were fabricated in the volume of an Yb:YAG crystal by ultrafast laser inscription. The DFB laser delivered 2 W of output power at a slope efficiency of 61{\%} in SLM operation under pumping with an optically pumped semiconductor laser. This power level outperforms previously demonstrated dielectric DFB waveguide lasers by nearly an order of magnitude. Our approach paves the way for compact, robust, and highly efficient high-power SLM laser sources.",
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2 W single-longitudinal-mode Yb : YAG distributed-feedback waveguide laser. / Calmano, Thomas; Ams, Martin; Dekker, Peter; Withford, Michael J.; Kränkel, Christian.

In: Optics Letters, Vol. 42, No. 14, 15.07.2017, p. 2734-2737.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Ams, Martin

AU - Dekker, Peter

AU - Withford, Michael J.

AU - Kränkel, Christian

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