Laser mechanisms and processes in the p-GE far IR laser

Laser mechanisms in the p-Ge far IR laser are identified and models presented to make laser line assignments in the three laser spectral regions: (A) multiple frequencies non-tunable with E and B, (B) multiple frequencies tunable with B, and (CR) single cyclotron frequencies tunable with B. Brief reviews of the classical and quantum theories of the p-Ge laser are given to support and explain the laser models.