as-pp "Istok-Laser", Vokzal'naya str. 2a, Fryazino, Moscow region 141 120 Russia ABSTRACT The paper describes bimorph mirrors purposed for operation in industrial laser machines. A detailed study of the technical parameters of cooled single channel deformable mirrors has been carried out. Results are given of preliminary tests of the uncooled bimorph mirrors in CO2 industrial laser machine with output radiation power exceeding 2 kW as well as in the laser machine using a pulsed copper vapour laser with mean radiation power of 3 5 W.
GaSb(Bi)/Al0.2Ga0.8Sb single quantum wells are characterized by a Fourier transform infrared spectrometerbased photoreflectance method at 77 K. Spatially direct and indirect transitions between the electronic levels at and above the effective band gap are well resolved. The shifts of the electronic levels with Bi incorporation are identified quantitatively. The results show that the upshift of the valence band edge is clarified to be dominant, while the Bi-induced downshift of the conduction band edge does exist and contributes to the band gap reduction in the GaSbBi quantum-well layer by (29±6)%.
The arguments for widespread use of the new class of fibre laser in the design of the technological equipment and introduction of laser technologies in production are given. The technological possibilities of these laser are demonstrated.
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