, Volume 76, Issue 5, pp 613-616

Laser transitions under resonant optical pumping of donor centres in Si:P

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Terahertz stimulated emission of phosphorus donors in silicon optically excited by radiation from the free-electron laser FELIX has been studied. It is found that a spectral line of the Si:P laser emission depends on pump frequency. Stimulated emission arises on the 2p0→1s(E) intra-centre transition (21.2 meV) under resonant pumping of the 2p0 state and on the 2p0→1s(T2) transition (22.3 meV) under pumping of the 2p± or higher odd-parity donor states. The line shift is attributed to the Auger redistribution of the 1s(E)- and 1s(T2)-state populations.

Received: 7 November 2002 / Revised version: 7 April 2003 / Published online: 14 May 2003
ID="*"Corresponding author. Fax: +49-30/6705-55-07, E-mail: sergeij.pavlov@dlr.de
ID="**"On leave from: The Institute for Physics of Microstructures, Nizhny Novgorod, Russia