Far-Infrared Two-Photon Transitions in n-GaAs
Abstract
Two-photon transitions in the far-infrared spectral range have been observed for the first time. The magnetophotoconductivity of n-GaAs measured by a pulsed high-power CH3F molecular laser at λ=496 μm exhibited two-photon transitions between 1s and 2s shallow donor states and two-photon cyclotron resonance. The experimental results and symmetry considerations indicate that the observed two-photon cyclotron resonance is caused by impurities.
- Publication:
-
Physical Review Letters
- Pub Date:
- October 1981
- DOI:
- 10.1103/PhysRevLett.47.1198
- Bibcode:
- 1981PhRvL..47.1198B
- Keywords:
-
- 32.80.Kf;
- 72.40.+w;
- 76.40.+b;
- 78.20.Ls;
- Photoconduction and photovoltaic effects;
- Diamagnetic and cyclotron resonances;
- Magnetooptical effects