Coherent control of harmonic generation in superlattices: single-mode response.
We study the harmonic generation spectrum in a semiconductor superlattice (a quantum-dot array) at slow relaxation. The effect of a single-mode response in an alternating rectangular (meander) electric field is demonstrated: For certain values of field parameters, the extremely wide discrete output spectrum with slowly decaying tails (multiharmonic generation) shrinks to one single harmonic (single-harmonic generation). Similarly, the effect is manifested in the transient continuous spectrum by diminishing the divergencies (peaks) at all odd harmonics but one. Substantial control over the spectrum is demonstrated.
Pronin
Kirill A
KA
Institute of Biochemical Physics, Russian Academy of Sciences, Moscow 119 991, Russia.
Bandrauk
Andre D
AD