| Title |
Didelės galios stabilios gaubtinės fazės itin trumpų impulsų formavimas parametrinio stiprinimo sistemose / |
| Translation of Title |
High power ultrashort CEP stable pulses via optical parametric ampification. |
| Authors |
Stanislauskas, Tomas |
| Full Text |
|
| Pages |
119 |
| Keywords [eng] |
Nonlinear optics ; parametric amplification ; OPCPA ; femtosecond pulses ; carrier-envelope phase |
| Abstract [eng] |
Optical parametric chirped pulse amplification (OPCPA) is a well established method to produce high-energy, sub-10 fs pulses for various applications in strong-field and attosecond science research. Carrier envelope phase (CEP) control is essential prerequisite for a number of the few cycle laser applications, in particular for experiments on generation of isolated attosecond pulses. However, only several CEP stable few-cycle OPCPA systems producing pulses with energies exceeding 1 mJ are reported in the world. This dissertation aims at advancement of OPCPA technique for generation of high contrast CEP stable few-cycle pulses at high peak and average power. In this work we present an optimized CEP stabilization of the Yb:KGW laser system and OPA set-ups pumped by this laser. Also the compact noncollinear optical parametric amplifiers seeded by passively CEP stabilized white light continuum pulses was developed producing the bandwidth of amplified signal sufficient for formation of pulses as short as 6 fs. Amplified parametric fluorescence produced in a high gain BBO-based femtosecond noncollinear parametric amplifier was investigated and differences of amplification geometries affecting spatial walk-off of the pump beam were examined. The generation of high temporal contrast >4 TW power CEP stabilized sub-9 fs pulses at repetition rate of 1 kHz was demonstrated. |
| Dissertation Institution |
Vilniaus universitetas. |
| Type |
Doctoral thesis |
| Language |
Lithuanian |
| Publication date |
2016 |
