Time-resolved spectroscopy of doubly-excited states in helium

Christian Reinhold Ott,Andreas Kaldun,Philipp Raith,Kristina Meyer,Martin Laux,Yizhu Zhang,Steffen Hagstotz,Thomas Ding,Robert Heck,Thomas Pfeifer

Time-resolved spectroscopy of doubly-excited states in helium

2013

Christian Reinhold Ott
Andreas Kaldun
Philipp Raith
Kristina Meyer
Martin Laux
Yizhu Zhang
Steffen Hagstotz
Thomas Ding
Robert Heck
Thomas Pfeifer

A two-electron wave packet among the lowest-lying doubly-excited states in helium is experimentally observed. It creates a 1-femtosecond modulation in the transient-absorption signal modified by a time-delayed coupling laser.

Keywords:

Helium
Time-resolved spectroscopy
Laser
Wave packet
Statistical physics
Nuclear magnetic resonance
Modulation
Excited state
Physics
Atomic physics
Coupling

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