| Abstract [eng] |
The opportunity to tune spectral and temporal characteristics of the fiber laser extends the application field of fiber lasers. One of the techniques, which allows tuning the central wavelength of the system is a continuum generation by pulses of a few hundred femtoseconds and the optical parametric amplification. By developing fiber systems for applications that do not require a high pulse energy, much more attention is paid to the compactness and reliability of the system. Therefore, techniques of controlling spectral and temporal characteristics of pulses that can be integrated into the fiber system design are developing intensively. Therefore, the research described in this doctoral thesis was aimed at the controlling of temporal and spectral pulse characteristics in soliton mode-locked fiber oscillators and in fiber chirped pulse amplification systems. Also experiments of chirped pulse amplification in large diameter photonic crystal fibers were described. These researches were important for development of fiber laser systems, which temporal, energetic and spectral characteristics of pulses are suitable for pumping of optical parametric amplifier operating at 1 MHz repetition rate. Finally, implementation of the developed methods and techniques into a wavelength-tunable laser system that generates pulses with the duration less than 150 fs in the spectral range from 700 nm up to 2040 nm is presented. |
