This thesis is comprised of theoretical investigations on several different strong field and/or sub-femtosecond processes resulting from the interaction between atoms and short laser pulses. Said theory is based on the numeric solution of the time-dependent Schro\"odinger equation (TDSE) by high performance computing methods. Specifically, Chapter 2 examines the Attoclock, a strong field problem designed to clock the escape of an electron as it tunnel ionises. In which, we present both the...[Show more]
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