Ultrafast-ARPES
===============

Ultrfast-ARPES, Tr-ARPES/TARPES, or pump-probe ARPES refers to pump
probe photoemission experiments conducted with pulses from a laser
typically of femtosecond duration. Some pump probe modalities
nonetheless exist at synchrotrons, and CW experiments can indirectly
access dynamics by measuring quasiparticle diffusion.

Tr-ARPES datasets can in principle have at least two additional degrees
of freedom, the excitation delay—referred to through PyARPES as
``delay``—and the pump wavelength.

Analysis tools for Tr-ARPES exist in ``arpes.analysis.tarpes``. Plotting
utilities are to be found in ``arpes.plotting.movie``.

More details and analysis examples can be found in
:doc:`TARPES examples <notebooks/example_tarpes_analysis>`.