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. (C) 2017 Optical Society of America
| Author details: | Mario NiebuhrORCiDGND, Axel HeuerORCiDGND |
|---|---|
| DOI: | https://doi.org/10.1364/OE.25.014317 |
| ISSN: | 1094-4087 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/28789017 |
| Title of parent work (English): | Optics express : the international electronic journal of optics |
| Publisher: | Optical Society of America |
| Place of publishing: | Washington |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2017 |
| Publication year: | 2017 |
| Release date: | 2020/04/20 |
| Volume: | 25 |
| Number of pages: | 6 |
| First page: | 14317 |
| Last Page: | 14322 |
| Funding institution: | Deutsche Forschungsgemeinschaft; Open Access Publication Fund of University of Potsdam |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
