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Circular photogalvanic effect in HgTe/CdHgTe quantum well structures
B. Wittmann, S. N. Danilov, V. V. Bel'kov +12
We describe the observation of the circular and linear photogalvanic effects in HgTe/CdHgTe quantum wells. The interband absorption of mid-infrared radiation as well as the intrasu…
Fast detector of the ellipticity of infrared and terahertz radiation based on HgTe quantum well structures
S. N. Danilov, B. Wittmann, P. Olbrich +12
We report a fast, room temperature detection scheme for the polarization ellipticity of laser radiation, with a bandwidth that stretches from the infrared to the terahertz range. T…
Quantum ratchet effects induced by terahertz radiation in GaN-based two-dimensional structures
W. Weber, L. E. Golub, S. N. Danilov +10
Photogalvanic effects are observed and investigated in wurtzite (0001)-oriented GaN/AlGaN low-dimensional structures excited by terahertz radiation. The structures are shown to rep…
Photogalvanic effects in HgTe quantum wells
B. Wittmann, R. Ravash, H. Diehl +8
We report on the observation of the terahertz radiation induced circular (CPGE) and linear (LPGE) photogalvanic effects in HgTe quantum wells. The current response is well describe…