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Multi-wavelength operation of a single broad area diode laser by spectral beam combining

  • Stabilized multi-wavelength emission from a single emitter broad area diode laser (BAL) is realized by utilizing an external cavity with a spectral beam combining architecture. Self-organized emitters that are equidistantly spaced across the slow axis are enforced by the spatially distributed wavelength selectivity of the external cavity. This resulted in an array like near-field emission although the BAL is physically a single emitter without any epitaxial sub-structuring and only one electrical contact. Each of the self-organized emitters is operated at a different wavelength and the emission is multiplexed into one spatial mode with near-diffraction limited beam quality. With this setup, multi-line emission of 31 individual spectral lines centered around and a total spectral width of 3.6 nm is realized with a 1000 mu m wide BAL just above threshold. To the best of our knowledge, this is the first demonstration of such a self-organization of emitters by optical feedback utilizing a spectral beam combining architecture.

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Metadaten
Author details:Christof Zink, Nils Werner, Andreas JechowORCiDGND, Axel HeuerORCiDGND, Ralf Menzel
DOI:https://doi.org/10.1109/LPT.2013.2291963
ISSN:1041-1135
ISSN:1941-0174
Title of parent work (English):IEEE photonics technology letters
Publisher:Inst. of Electr. and Electronics Engineers
Place of publishing:Piscataway
Publication type:Article
Language:English
Year of first publication:2014
Publication year:2014
Release date:2017/03/27
Tag:Laser resonators; optical feedback; semiconductor lasers
Volume:26
Issue:3
Number of pages:4
First page:253
Last Page:256
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Peer review:Referiert
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