PT Journal
AU Bespalov, AV
   Gol'tsman, GN
   Semenov, AD
   Renk, KF
TI Determination of the far-infrared emission characteristic of a cyclotron p-germanium laser by use of a superconducting Nb detector
SO Solid State Communications
JI Solid State Communications
PY 1991
BP 503
EP 506
VL 80
IS 7
DI 10.1016/0038-1098(91)90060-9
DE Nb detector; applications
AB We studied the far-infrared emission characteristics of a cyclotron p-germanium laser using a broad-band superconducting Nb film detector. For magnetic fields between ∼25 kOe and ∼50 kOe, emission in a frequency range from ∼50 cm-1 to ∼100 cm-1 with maximum intensity around 90 cm-1 was obtained. We determined, for fixed magnetic fields, electric field dependences of the emission intensity taking into account that the total electric field is a sum of the applied and the Hall electric field. An analysis of the emission intensity characteristic gives evidence that transitions between the two lowest Landau levels of light holes are responsible for the laser action.
ER