CASCADING SYSTEM FOR REINFORCING LASER PULSES

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The utility model relates to the field optics, in particular to optical engineering fiber amplifiers. System for reinforcing laser pulses, including device for introducing laser signal pulse, optical fiber amplifier, with normal dispersion group velocities, alloyed with ions of rare-earth, pumping source, multiplexer, through which to optical fiber - amplifier are connected device for introducing pulses and pumping source, optical fiber - modulator with normal dispersion group speeds, input of which is connected to output fibre - amplifier and compressor for compression of output pulse and increasing its peak power, connected to the output of the fibre - modulator, characterized in that fiber - amplifier and fiber - modulator are photon - crystalline, fiber - amplifier legirovano ions Ib 3 +, the ratio of the value of dispersion group velocities to parametre nonlinearity in optical fiber - amplifier exponentially grows fibre length, and in fiber-compensator giperbolicheski goes down. FIELD photon - crystalline fibre allows amplification in different wave length bands. Increased ratio value of dispersion group velocities to parametre non-linearity in-doped photon - crystalline fiber provides lower nnyi level of frequency modulation of amplified pulse. Due to this amplification is more effective, as achievement of spectrum of pulse limits spectral strip amplification is at high values of pulse energy. Snizhe the ratio of value dispersion group velocities to parametre non-linearity in photon - crystalline fiber - modulator provides convergence envelope pulse to parabolic form and resistance pulse.