ACTIVE ELEMENT OF SOLID-STATE WAVEGUIDE LASER AMPLIFIER AND SOLID-STATE WAVEGUIDE LASER AMPLIFIER Russian patent published in 2017 - IPC H01S3/63 

FIELD: physics.

SUBSTANCE: laser amplifier of the visible and near infrared spectral range with longitudinal pumping contains an optical element from a bulk solid-state optical amplifying material doped with optically active rare-earth ions, containing a formed through a side polished plane parallel to the geometric axis of the laser amplifier element by the method of direct femtosecond recording along and around the optical axis element of the optical waveguide shell from the regions with a reduced optical material by the index of refraction. Moreover, the internal transverse dimension of the optical waveguide confined to the shell is more than 100 mcm and less than 5000 mcm.

EFFECT: providing the possibility of increasing the optical efficiency of the amplifier and the maximum permissible power of optical radiation.

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