FIELD: physics.
SUBSTANCE: device includes an optical amplifier which includes an optical amplifying medium (11) which optically amplifies light to be amplified, and a transparent medium (12), through which the light to be amplified passes multiple times; and an energy source (30) which supplies energy for exciting the optical amplifying medium (11). The set of components, including the optical amplifying medium (11) and the transparent medium (12) of the optical amplifier, are combined. The transparent medium (12) has the shape of a rectangular parallelepiped or a polygonal column having five or more sides, and light (11) incident on the transparent medium (12) is completely reflected by surfaces of the walls of the transparent medium (12), moving and rotating inside the transparent medium (12).
EFFECT: smaller size, high power and stabilisation of the device.
20 cl, 33 dwg
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