Fibre lasers are both excellent platforms to study fundamental science dynamical phenomena such as instabilities, optical turbulence, dissipative solitons and many more and at the same time find technological applications as sources of high power light pulses.
In my research I’m developing numerical simulations and theory of fibre lasers to allow an understanding of the laser dynamics and the design of new pulsed (mode-locked) lasers sources: exploring new ways to generate light pulses is both exciting and at the same time useful since there is a great demand of a range of different techniques which one could choose depending on the applications, on the specific emission wavelength, waveguide features and gain medium he/she wants to work with.
Instabilities present in lasers are often seen as detrimental effects to be suppressed to achieve a useful operational regime. I am particularly interested in taking a different perspective seeing instabilities as an opportunity. Engineering instabilities may prove a useful tool to achieve mode-locking and spontaneous pulses generation in fibre lasers: one particular case of interest is a normal dispersion fiber laser with two frequency detuned spectral filters (also called Mamyshev oscillator) which can operate in high order mode-locking regime.
My works in this field:
- N. Tarasov, A. M. Perego, D. V. Churkin, K. Staliunas and S. K. Turitsyn, “Mode-locking via dissipative Faraday instability”, Nature Communications 7, 12441 (2016).