Laser control strategies for energy transfer reactions in atom molecule collisions

被引:36
作者
de Vivie-Riedle, R [1 ]
Sundermann, K [1 ]
Motzkus, M [1 ]
机构
[1] Max Planck Inst Quantum Opt, D-85748 Garching, Germany
来源
FARADAY DISCUSSIONS | 1999年 / 113卷
关键词
D O I
10.1039/a901657k
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We present schemes for the laser pulse control of bimolecular reactions. As a model system we treat the collision complex Na-H-2, which is unbound in the electronic ground state X(2)A(1) and weakly bound in the electronic excited state A(2)B(2). This system decays non-adiabatically from the excited state via a conical intersection back to the ground state. The objective of the laser controls presented is the excitation of the collision pair with simultaneous focusing of the wavepacket towards the conical intersection. In the first step an optimal laser pulse is derived by optimal control theory over the expectation values for semi-positive definite operators. In the second step chirped laser pulses are fitted to the optimal one. For the chirped laser pulses the influences of the chirp is discussed. Special emphasis is placed on the excitation of vibrations of the H-2 compound, which are considered to be important for the passage through the conical intersection.
引用
收藏
页码:303 / 317
页数:15
相关论文
共 34 条
[21]   Extensions to quantum optimal control algorithms and applications to special problems in state selective molecular dynamics [J].
Sundermann, K ;
de Vivie-Riedle, R .
JOURNAL OF CHEMICAL PHYSICS, 1999, 110 (04) :1896-1904
[22]  
Sundermann K., 1998, THESIS FREIE U BERLI
[23]   COHERENT PULSE SEQUENCE INDUCED CONTROL OF SELECTIVITY OF REACTIONS - EXACT QUANTUM-MECHANICAL CALCULATIONS [J].
TANNOR, DJ ;
KOSLOFF, R ;
RICE, SA .
JOURNAL OF CHEMICAL PHYSICS, 1986, 85 (10) :5805-5820
[24]   ALGEBRAIC VARIATIONAL AND PROPAGATION FORMALISMS FOR QUANTAL DYNAMICS CALCULATIONS OF ELECTRONIC-TO-VIBRATIONAL, ROTATIONAL ENERGY-TRANSFER AND APPLICATION TO THE QUENCHING OF THE 3P STATE OF SODIUM BY HYDROGEN MOLECULES [J].
TAWA, GJ ;
MIELKE, SL ;
TRUHLAR, DG ;
SCHWENKE, DW .
JOURNAL OF CHEMICAL PHYSICS, 1994, 100 (08) :5751-5777
[25]   Statistical model for nonadiabatic decay of an exciplex strongly coupled to a dissociative continuum [J].
Topaler, MS ;
Truhlar, DG .
JOURNAL OF CHEMICAL PHYSICS, 1997, 107 (02) :392-401
[26]   Measuring ultrashort laser pulses in the time-frequency domain using frequency-resolved optical gating [J].
Trebino, R ;
DeLong, KW ;
Fittinghoff, DN ;
Sweetser, JN ;
Krumbugel, MA ;
Richman, BA ;
Kane, DJ .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1997, 68 (09) :3277-3295
[27]   Femtosecond photochemical ring opening of 1,3-cyclohexadiene studied by time-resolved intense-field ionization [J].
Trushin, SA ;
Fuss, W ;
Schikarski, T ;
Schmid, WE ;
Kompa, KL .
JOURNAL OF CHEMICAL PHYSICS, 1997, 106 (22) :9386-9389
[28]   FEMTOSECOND OPTICAL PULSE SHAPING AND PROCESSING [J].
WEINER, AM .
PROGRESS IN QUANTUM ELECTRONICS, 1995, 19 (03) :161-237
[29]   Sub-20-fs pulses tunable across the visible from a blue-pumped single-pass noncollinear parametric converter [J].
Wilhelm, T ;
Piel, J ;
Riedle, E .
OPTICS LETTERS, 1997, 22 (19) :1494-1496
[30]   Comprehensive measurement of the S1 azulene relaxation dynamics and observation of vibrational wavepacket motion [J].
Wurzer, AJ ;
Wilhelm, T ;
Piel, J ;
Riedle, E .
CHEMICAL PHYSICS LETTERS, 1999, 299 (3-4) :296-302