Re­se­arch on ul­tra­f­ast spin-la­sers pu­blis­hed in Na­tu­re

Re­cent re­sults of our re­se­arch about ul­tra­f­ast spin-po­la­ri­zed la­sers have been selec­ted for pu­bli­ca­ti­on in Na­tu­re. In col­la­bo­ra­ti­on with our col­le­agues from Ulm Uni­ver­si­ty and the Uni­ver­si­ty at Buf­fa­lo we were able to de­mons­tra­te that that the cou­pling bet­ween car­ri­er spin and light po­la­riza­t­i­on in se­mi­con­duc­tor la­sers can enable di­rect mo­du­la­ti­on fre­quen­cies above 200 GHz, ex­cee­ding by ne­ar­ly an order of ma­gni­tu­de the best con­ven­tio­nal de­vices. As ex­cep­tio­nal­ly high mo­du­la­ti­on band­widths can be achie­ved with low power con­sump­ti­on, our con­cept shows a pro­mi­sing path for the next ge­ne­ra­ti­on of en­er­gy ef­fi­ci­ent ul­tra-fast op­ti­cal com­mu­ni­ca­ti­on. See also...

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