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.
Author details: | Christof Zink, Nils Werner, Andreas JechowORCiDGND, Axel HeuerORCiDGND, Ralf Menzel |
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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 |