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Re­se­arch on ul­tra­f­ast spin-la­sers pu­blis­hed in Na­tu­re

Created by Lara Kris­tin Zei­tel | |   Aktuelle Meldungen | PTT-en

Martin Hofmann, Markus Lindemann and Nils Gerhardt from our Chair of Photonics and Terahertz Technology have developed a new concept for ultra-fast data transfer via fiber optic cables.

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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Postal Address

Ruhr-University Bochum
Faculty of Electrical Engineering
and Information Technology
Photonics and Terahertz Technology
Postbox ID 16
Universitätsstraße 150
D-44801 Bochum


Room: ID 04/327
Te­l.: (+49) (0) 234 32 - 23051
Fax: (+49) (0) 234 32 - 14167
E-Mail: ptt+office(at)
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Chair Holder

Prof. Dr.-Ing. Martin Hofmann
Building: ID 04/329
Te­l.: (+49) (0) 234 32 - 22259
Fax: (+49) (0) 234 32 - 14167
E-Mail: martin.hofmann(at)

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