Injection-seeded internal-reflection-mode p - Ge laser exceeds 10 W peakterahertz power

Injection seeding of a large active p - Ge laser crystal operating on total internal reflection modes is demonstrated with peak output power at the level of 40 W in the 1.5 - 4.2 THz spectral range. The improvement over traditional 1 W axial mode p - Ge lasers is due both to spatially and temporally more efficient use of the available population inversion.