D. Some et Av. Nurmikko, ULTRAFAST PHOTOEXCITED CYCLOTRON EMISSION - CONTRIBUTIONS FROM REAL AND VIRTUAL EXCITATIONS, Physical review. B, Condensed matter, 53(20), 1996, pp. 13295-13298
The coherent cyclotron transients generated upon femtosecond interband
photoexcitation of GaAs are studied under different magnetic-field co
nfigurations. By varying the excitation wavelength, we are able to dis
criminate between contributions to the THz emission due to ballistic t
ransport and instantaneous inter-Landau level polarizations.