Phase measurement and far-field reconstruction on externally coupled laser diode arrays
- Passive coherent combination of several discrete low power laser diodes is a promising way to overcome the issue of degrading beam quality when scaling single emitters to > 10W output power. Such systems would be an efficient alternative to current high power sources, yet they suffer from fatal coherence loss when operated well above threshold. We present a new way to obtain detailed coherence information for laser diode arrays using a spatial light modulator to help identify the underlying decoherence processes. Reconstruction tests of the emitted far-field distribution are conducted to evaluate the performance of our setup.
Author details: | Mario NiebuhrORCiDGND, Axel HeuerORCiDGND |
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URN: | urn:nbn:de:kobv:517-opus4-402140 |
Publication series (Volume number): | Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (383) |
Publication type: | Postprint |
Language: | English |
Date of first publication: | 2017/10/19 |
Publication year: | 2017 |
Publishing institution: | Universität Potsdam |
Release date: | 2017/10/19 |
Number of pages: | 6 |
Source: | Optics express 25 (2017) Nr. 13, S. 14317-14322. - DOI: 10.1364/OE.25.014317 |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Peer review: | Referiert |
Publishing method: | Open Access |
License (German): | Keine öffentliche Lizenz: Unter Urheberrechtsschutz |
External remark: | Bibliographieeintrag der Originalveröffentlichung/Quelle |