| Abstract [eng] |
Fiber lasers have a strong interest and growth in a field of photonics. In this doctoral dissertation, the use of versatile and flexible fiber technology by means of theoretical and experimental research allowed the realization of ultrashort pulse fiber laser sources which can be successfully applied in various fields of science and industry. The main goals in the dissertation were consistently approached - the realization of a compact high energy (µJ level) ultrashort pulse fiber laser system, the demonstration of high average power (>20 W) of laser radiation and the expansion of the regimes of the laser operation. A compact fiber chirped pulse amplification system exploiting a tandem of a chirped fiber Bragg grating stretcher and a chirped volume Bragg grating compressor with matched dispersion profiles, realizing high fidelity transform-limited ultrashort laser pulses (<300 fs) at the output of the system was proposed and experimentally demonstrated. The successful demonstration of these technologies and the implementation of a chirped pulse amplification system allowed the development of high-energy and high average power fiber laser systems. Finally, a unique method to synthesize ultra-high (>2 GHz) repetition rate bursts of ultrashort laser pulses has been demonstrated which allowed to expand the regimes of the laser operation and thus to increase the pulse/burst energies at the output of a fiber laser system. |
