Abstract
GaAs quantum wells are simultaneously illuminated with near-infrared (NIR) radiation at frequency ωnir and intense far-infrared (FIR) radiation from a free-electron laser at ωfir. Magnetic fields up to 9 T are applied. Strong and narrow sidebands are observed at ωsideband=ωnir±2ωfir. The intensity of the sidebands is enhanced when either ωsideband or ωniris near the onset of NIR absorption in the quantum well, or when ωfir is near the free-electron cyclotron frequency. We attribute these sidebands to four-wave mixing of NIR and FIR photons whose energies differ by more than a factor of 100.
| Original language | English |
|---|---|
| Pages (from-to) | 3543-3545 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 70 |
| Issue number | 26 |
| DOIs | |
| State | Published - Jun 30 1997 |
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