Hannover 2013 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 22: Poster: Interaction with strong or short laser pulses

A 22.14: Poster

Dienstag, 19. März 2013, 16:00–18:30, Empore Lichthof

Combining a reaction microscope with a high repetition laser system — •Sascha Birkner, Federico Furch, Claus Peter Schulz, and Marc J.J. Vrakking — Max Born Institute, Max-Born-Str. 2a, 12489 Berlin, Germany

Strong field and attosecond induced electron dynamics and electron localisation in small molecules, e.g. H₂, have been studied in recent years [1,2]. In these experiments the energy and angular distribution of the ions from the laser induced dissociative ionisation have been measured. To study these type of photo induced reactions in more detail we have built a reaction microscope which enables experiments to measure the energy and angular distributions of ions and electrons in coincidence. Coincidence experiments typically have low data rates and thus require long data acquisition times. To overcome this problem we have combined our setup with a high repetition 400 kHz laser system delivering carrier envelope phase (CEP) stable sub-10 fs pulses with pulse energies up to 4 µJ. With tight focusing an intensity of > 10¹⁴ W/cm² can be reached. First data on strong field ionisation will be presented.

[1] M. F. Kling, et al., Science 312, 246 (2006).

[2] G. Sansone, et al., Nature 465, 763 (2010).