METHOD FOR MANUFACTURING WAVEGUIDE IN VOLUME OF PLATE MADE OF POROUS OPTICAL MATERIAL Russian patent published in 2017 - IPC G02B27/10 

FIELD: physics.

SUBSTANCE: method for manufacturing a waveguide in the volume of a plate made of porous optical material transparent for the wavelength of laser radiation consists in moving a focused laser beam relative to the plate or the plate relative to the focused laser beam in the plane of waveguide formation until the waveguide is formed. The pulse duration of the laser radiation is selected not more than 200 fs at a pulse repetition rate of at least 300 kHz, the energy density in the pulse is not less than 8⋅10³ J/cm² and not more than 12⋅10³ J/cm², and the movement speed of the focused laser beam relative to the plate or the plate relative to the beam is not less than 0.125 mm/s and not more than 3.750 mm/s, wherein the plate is used with thermo-packed layers with thickness of not more than 30 mcm and not less than 5 mcm on wide plate surfaces.

EFFECT: creation of a volumetric waveguide with a difference in the refractive index of the core-sheath values exceeding 0,12, with a shortened manufacturing time.

10 dwg