Related Experiment Video
Updated: Jun 19, 2026

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
Published on: December 3, 2013
Highly nondegenerate four-wave mixing in semiconductor laser oscillators
Abstract:
A complete model to evaluate frequency conversion that is due to highly nondegenerate four-wave mixing in Fabry-Perot laser oscillators is presented; propagation effects are taken into account. Simplified expressions are obtained in the limit of perfectly reflecting mirrors that permit analytical solutions; they are in good agreement with the results of the numerical analysis. Examples of results exhibit interesting features such as a correction factor for the relaxation frequency peak, good conversion gain up to the terahertz region, and complex behavior of the frequency response near side-mode resonances.
Related Concept Videos
Carrier Generation and Recombination
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...
Biasing of Metal-Semiconductor Junctions
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
Oscillations In An LC Circuit
Molecular Orbital Theory II
MOSFET: Enhancement Mode
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...
MOSFET Amplifiers

