Optical system for generation of laser pulses high spectral density

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The invention relates to optical fiber amplifiers and generators laser pulses. Optical system for generation of laser pulses high spectral density consists of pulse source, pumping source and active fiber with normal dispersion group velocities, alloyed with ions of rare-earth elements. Device includes generation system thick parabolic pulse, connected with linear dispersed element, having abnormal dispersion group velocities, which, in its turn, is connected with non-linear fiber, having normal dispersion group velocities. Effect consists in reduction of spectrum width pulse without considerable losses of its energy. 2 dwg.