An automatic measurement system of submillimeter wave laser was introduced, in which a single chip machine played an important part.

By means of the iteration method, the operating gas pressure and thepower reflection coefficients of input and output meshes of the miniature opticallypumping NH3 molecular submillimeter wave laser were calculated and studied sys-tematically based on the density matrix equation of quantum system.

Theoretical studies of submillimeter radiation and near-infrared emission due to excitonic recombination in an asymmetric coupled-quantum-well structure;