| Title |
Rezonatoriaus komponentų grupinio vėlinimo dispersijos įtaka sinchroniškai femtosekundiniais impulsais kaupinamam parametriniam šviesos generatoriui / |
| Translation of Title |
The influence of group delay dispersion of the resonator components on an optical parametric oscillator synchronously pumped by femtosecond pulses. |
| Authors |
Ivanauskienė, Karolina |
| Full Text |
|
| Pages |
118 |
| Keywords [eng] |
parametric light generation ; synchronous pumping ; group delay dispersion |
| Abstract [eng] |
Synchronously pumped optical parametric oscillators (SPOPOs) are devices capable of generating femtosecond pulses at the high repetition rate that are tunable in a wide spectral range. These light sources are of a great interest for many scientific applications such as nonlinear microscopy and spectroscopy. Wide and attractive application range determines that these devices are continuously under the development. The main trends in the SPOPO development are output power scaling and wavelength tuning range broadening. During the research described in the thesis, special attention was paid to the characteristics of output wavelength tuning. Here, broadband chirped mirrors were used for the construction of the resonator. It was shown, that non-monotonicity combined with group delay dispersion (GDD) values that are close to zero might lead to a complicated relationship between cavity length detuning and output wavelength. Simultaneous generation of several wavelengths and tuning gaps were observed experimentally. Special attention was devoted to the research of pulse to pulse instabilities. It was shown that once GDD approaches zero stable operation of the SPOPO can be disrupted. This way the energy of output pulses obtain periodic or even chaotic oscillation patterns. In the case of periodic oscillations, the spectral evolution of the pulse train was observed experimentally. Research results presented in the thesis describe the impact of dispersive optical components to the SPOPO output emission and its characteristics. |
| Dissertation Institution |
Vilniaus universitetas. |
| Type |
Doctoral thesis |
| Language |
Lithuanian |
| Publication date |
2017 |
