29 April 1999 Terahertz harmonic generation from Bloch-oscillating superlattices in quasi-optical arrays
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Abstract
We explored harmonic generation by Bloch oscillation in miniband superlattices driven by intense THz radiation from the UCSB free electron lasers, as a function of both THz intensity and applied DC bias. To accomplish this we integrated micrometers size superlattice mesas in a quasi-optical array which amplified a plane wave incident normal to the array and coupled it into the growth direction of the superlattice. We were able to successfully measure both second and third harmonic generation quantitatively. The harmonics are compared to a quasi-classical picture of Bloch oscillation.
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Michael C. Wanke, Jeff S. Scott, S. J. Allen, Kevin D. Maranowski, Arthur C. Gossard, "Terahertz harmonic generation from Bloch-oscillating superlattices in quasi-optical arrays", Proc. SPIE 3617, Terahertz Spectroscopy and Applications, (29 April 1999); doi: 10.1117/12.347119; https://doi.org/10.1117/12.347119
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