Stimulated terahertz stokes emission of silicon crystals doped with antimony donors.
Stimulated Stokes emission has been observed from silicon crystals doped by antimony donors when optically excited by radiation from a tunable infrared free electron laser. The photon energy of the emission is equal to the pump photon energy reduced by the energy of the intervalley transverse acoustic (TA) g phonon in silicon (approximately 2.92 THz). The emission frequency covers the range of 4.6-5.8 THz. The laser process occurs due to a resonant coupling of the 1s(E) and 1s(A1) donor states (separation approximately 2.97 THz) via the g-TA phonon, which conserves momentum and energy within a single impurity center.
Institute of Planetary Research, German Aerospace Center (DLR), 12489 Berlin, Germany.
S G
SG
Pavlov
H-W
HW
Hübers
J N
JN
Hovenier
T O
TO
Klaassen
D A
DA
Carder
P J
PJ
Phillips
B
B
Redlich
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H
Riemann
R Kh
RKh
Zhukavin
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Shastin