CHARACTERISTICS OF A FAR-INFRARED GERMANIUM HOT-HOLE LASER IN THE VOIGT AND FARADAY FIELD CONFIGURATIONS

A far-infrared laser utilizing intersubband transitions of hot holes i n germanium with a hole density of 2.5 X 10(14) cm(-3) is investigated in the Voigt and Faraday field configurations. New comparative data f or both configurations are given on the field ranges in which lasing t akes place, the emission intensity and spectra, and their dependence o n the temperature of the crystal. The Voigt configuration is shown to be preferable, having a broader lasing field range, a higher working t emperature, a richer emission spectrum, and a higher intensity. Promin ent details of the laser characteristics are discussed, and a comparis on is made with calculations. (C) 1997 American Institute of Physics. [S1063-7826(97)02711-7].