FIELD: optoelectronics; integral optics. SUBSTANCE: active medium includes fractional microclusters (aggregates) of correlated in space solid particles of nanometer size not necessarily absorbing. Such microobjects represent optical microresonators due to multiple overreflection of light between nonoparticles inside cluster. Coherent radiation develops as a result of forced light emission induced by external radiation and localized in cluster. Spatial orientation of output radiation is obtained by changing the incident light direction. EFFECT: more efficient coherent light formation process.
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