Control of giant breathing motion in c60 with temporally shaped laser pulses.
Femtosecond laser pulses tailored with closed-loop, optimal control feedback were used to excite oscillations in C60 with large amplitude by coherent heating of nuclear motion. A characteristic pulse sequence results in significant enhancement of C2 evaporation, a typical energy loss channel of vibrationally hot C60. The separation between subsequent pulses in combination with complementary two-color pump-probe data and time-dependent density functional theory calculations give direct information on the multielectron excitation via the t(1g) resonance followed by efficient coupling to the radial symmetric a(g)(1) breathing mode.
Laarmann
T
T
Max Born Institute, Max-Born-Strasse 2a, D-12489 Berlin, Germany. laarmann@mbi-berlin.de
Shchatsinin
I
I
Stalmashonak
A
A
Boyle
M
M
Zhavoronkov
N
N
Handt
J
J
Schmidt
R
R
Schulz
C P
CP
Hertel
I V
IV