Ge1-xSnx alloys show substantially larger nonlinear mid-infrared responses than GaAs for certain pump energies and compositions in non-degenerate two-photon absorption schemes.
Directional pho- tocurrent generated by quantum interference control
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Multi-photon schemes for mid-infrared detection
Ge1-xSnx alloys show substantially larger nonlinear mid-infrared responses than GaAs for certain pump energies and compositions in non-degenerate two-photon absorption schemes.