LASER RADIATION PULSE GENERATOR Russian patent published in 1996 - IPC

FIELD: quantum electronics; high-power sources of narrow-band optical radiation. SUBSTANCE: spectral filter 8 placed in front of photocell 6 installed at input of control unit of active shutter 1 spatially divides radiation of master laser 7 according to wavelengths. Fabry-Perot interferometer is used as spectral filter 8 in which mirrors are spaced h ≅ c/2Δν, apart, where c is sound velocity; Δν is spectral radiation band of master laser. Input of photocell 8 is spatially limited by radii of Fabry-Perot rings of same order of interference corresponding to upper and lower limits of stabilized frequency space on interference pattern obtained by means of Fabry-Perot interferometer. EFFECT: improved stabilization of output radiation frequency. 2 cl, 1 dwg