Induced hot-hole millimeter emission in germanium in fields E||H (cyclotron-resonance negative-effective-mass amplifier and generator)
Andronov A. A. , Belyantsev A. M. , Gavrilenko V. I. , Dodin E. P. , Krasil'nik Z. F. , Nikonorov V. V., Pavlov S. A.
Stimulated electromagnetic emission has been observed in the short-wavelength part of the millimeter range (λ 1.5-2.2 mm) from /?-type Ge cooled down to liquid-helium temperature in fields E||H[|[100].