Laser threshold reduction in a spintronic device

Rudolph, J.; Hägele, D.; Gibbs, H. M.; Khitrova, G.; Oestreich, M.
June 2003
Applied Physics Letters;6/23/2003, Vol. 82 Issue 25, p4516
Academic Journal
We demonstrate a reduction of the threshold of a semiconductor laser by optically pumping spin-polarized electrons in the gain medium. Polarized electrons couple selectively to one of two possible lasing light modes which effectively reduces the threshold by up to 50% compared to conventional pumping with unpolarized electrons. We theoretically show that our concept can be generalized to an electrically pumped laser.


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