Ultrastable multi-branch femtosecond laser as a front-end for time-domain nonlinear and quantum spectroscopy

点击翻译按钮获取中文摘要

Advances in femtosecond laser technology ultimately enabled the field of ultrafast science, allowing for the study of dynamical processes occurring in nature on femtosecond and attosecond timescales. From the kinetics of chemical reactions to the dynamics of collective excitations in condensed matter, time-resolving ultrafast process unveils their microscopic origins and yields invaluable information on transient phenomena such as, for example, dressing of quasiparticles, decoherence mechanisms, etc. This ability to trace the evolution of collective excitations and their correlations has advanced our understanding of many-body interactions and their emergent macroscopic properties. Our Team firmly believes that advances in femtosecond laser technology are poised to unlock a new era, where light and matter fields can be accessed from the entirely new perspective of quantum field theory. From this perspective, in this proposal we are seeking funding to purchase a state-of-the-art custom-designed commercial erbium-doped fiber femtosecond fiber laser, which delivers two independent and mutually coherent optical pulse trains. Combined with the possibility of independent amplitude modulation of both outputs, such system provides a front-end toward many experiments at the forefront of contemporary science.