| Title |
Skaidulinių lazerių technologijos didelės energijos femtosekundinėms derinamo bangos ilgio optinėms parametrinėms čirpuotų impulsų stiprinimo sistemoms / |
| Translation of Title |
Fiber laser based technologies for high energy femtosecond wavelength-tunable optical parametric chirped pulse amplification systems. |
| Authors |
Danilevičius, Rokas |
| Full Text |
|
| Pages |
48 |
| Keywords [eng] |
fiber lasers ; parametric amplifiers ; OPCPA ; ultrashort pulses |
| Abstract [eng] |
Development of optical parametric chirped pulse amplification (OPCPA) systems is a rapidly emerging field in ultrafast laser technology. This doctoral dissertation comprises theoretical modelling and experimental investigations which led to the realization of an OPCPA system with a novel frontend. A unique concept opened a path for the development of compact femtosecond high-energy tunable hybrid laser systems, incorporating advantages of fiber and solid-state laser technologies, which may be adopted in a variety of ultrafast laser applications. During the doctoral studies a novel optically synchronised dual-wavelength all-in-fiber laser source for seeding both femtosecond Yb and picosecond Nd-based solid-state lasers was proposed and experimentally demonstrated. Incorporation of pulse temporal and spectral stretching techniques in a picosecond all-in-fiber laser together with the methods of narrowband Nd ions based solid-state and broadband optical parametric amplification enabled the realisation of a new technique of femtosecond pulse generation. Method to improve the output pulse contrast in a chirped pulse amplification system by applying the temperature gradient on a chirped fiber Bragg grating stretcher and thus controlling the dispersion parameters was investigated numerically and experimentally. The doctoral work was concluded by implementing the developed novel methods into an experimental realisation of a compact femtosecond high-energy wavelength tunable Vis NIR OPCPA system. |
| Dissertation Institution |
Vilniaus universitetas. |
| Type |
Summaries of doctoral thesis |
| Language |
Lithuanian |
| Publication date |
2017 |
