FIELD: quantum electronics. SUBSTANCE: control signals arrive from program-controlled unit 10 through units 6 and 9 to deflectors 5 and 7; according to these signals, deflector 7 switches over pumping beam 8 that creates excitation regions 1.1 and 1.2 in active medium; acoustooptical deflector 5 functions at the same time to effect beam deflection in cavity dispersion plane. Sectionalized reflector in the form of set of reflecting elements 3.1 and 3.2 arranged one on top of other in planed parallel to cavity dispersion plane operating jointly with deflector 7 will make it possible to dispense with reflector mechanical turning gear. Multichannel design of deflector 5 and unit 6 will provide for multifrequency oscillation with independent tuning of each oscillation wavelength. EFFECT: improved precision of positioning and speed of oscillation wavelength control; provision for multifrequency oscillation. 2 cl, 1 dwg
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