TY - JOUR
T1 - Pathways to state-selective control of vibrational wavepackets in the deuterium molecular ion
AU - Calvert, Christopher
AU - King, R.B.
AU - Birkeland, Tore
AU - Alexander, J.D.
AU - Greenwood, Jason
AU - Bryan, Tomas
AU - Newell, W.R.
AU - Murphy, D.S.
AU - McCann, J.F.
AU - Williams, Ian
PY - 2009/5
Y1 - 2009/5
N2 - The capability of intense ultrashort laser pulses to initiate, control and image vibrational wavepacket dynamics in the deuterium molecular ion has been simulated with a view to inform and direct future femtosecond pump-control-probe experiments. The intense-field coherent control of the vibrational superposition has been studied as a function of pulse intensity and delay time, to provide an indication of key constraints for experimental studies. For selected cases of the control mechanism, probing of the subsequent vibrational wavepacket dynamics has been simulated via the photodissociation (PD) channel. Such PD probing is shown to elucidate the modified wavepacket dynamics where the position of the quantum revival is sensitive to the control process. Through Fourier transform analysis the PD yield is also shown to provide a characterisation of the vibrational distribution. It has been shown that a simple 'critical R cut-off' approximation can be used to reproduce the effect of a probe pulse interaction, providing a convenient and efficient alternative to intensive computer simulations of the PD mechanism in the deuterium molecular ion.
AB - The capability of intense ultrashort laser pulses to initiate, control and image vibrational wavepacket dynamics in the deuterium molecular ion has been simulated with a view to inform and direct future femtosecond pump-control-probe experiments. The intense-field coherent control of the vibrational superposition has been studied as a function of pulse intensity and delay time, to provide an indication of key constraints for experimental studies. For selected cases of the control mechanism, probing of the subsequent vibrational wavepacket dynamics has been simulated via the photodissociation (PD) channel. Such PD probing is shown to elucidate the modified wavepacket dynamics where the position of the quantum revival is sensitive to the control process. Through Fourier transform analysis the PD yield is also shown to provide a characterisation of the vibrational distribution. It has been shown that a simple 'critical R cut-off' approximation can be used to reproduce the effect of a probe pulse interaction, providing a convenient and efficient alternative to intensive computer simulations of the PD mechanism in the deuterium molecular ion.
UR - http://www.scopus.com/inward/record.url?scp=67749089366&partnerID=8YFLogxK
U2 - 10.1080/09500340902919444
DO - 10.1080/09500340902919444
M3 - Article
SN - 0950-0340
VL - 56
SP - 1060
EP - 1069
JO - Journal of Modern Optics
JF - Journal of Modern Optics
IS - 9
ER -