Long-wavelength multiple quantum well modulators
Thomas H. Wood
Avariety of novel physical effects have been observed in multiple quantum wells (MQWs), which are thin layers of a low band-gap semiconductor surrounded by higher band gap material. Frequently, quantum mechanical effects are manifested in useful, macroscopic properties. Several years ago, it was discovered that large changes in the zero-point energies of particles in MQWs could be achieved by the application of an electric field perpendicular to the quantum well layers.
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