@misc{NiebuhrHeuer2017, author = {Niebuhr, Mario and Heuer, Axel}, title = {Phase measurement and far-field reconstruction on externally coupled laser diode arrays}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-402140}, pages = {6}, year = {2017}, abstract = {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.}, language = {en} }