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Sub-picosecond intersub-band electron scattering times in GaN/AlGaN superlattices grown by molecular beam epitaxy

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5 Author(s)
Ng, H.M. ; Lucent Technol. Bell Labs, Murray Hill, NJ, USA ; Gmachl, C. ; Frolov, S.V. ; Chu, S.N.G.
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GaN quantum wells were studied, grown by plasma-assisted molecular beam epitaxy with a sub-band spacing of ~740 meV (λ=1.67 μm). The GaN quantum wells are clad on both sides with short-period superlattice barriers. Using the time-resolved pump-and-probe technique, with 1.55 μm pump and 1.70 μm probe wavelength, an intersub-band electron scattering time of 370 fs was measured

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Optoelectronics, IEE Proceedings -  (Volume:148 ,  Issue: 56 )