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Manipulating Quantum Interference in Two-Color (ω+3ω) Strong Laser Field Photodissociation Dynamics of D2
Zhaopeng Sun1,2, Yunquan Liu2,3
1School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264025, China.
The Journal of Physical Chemistry. A
|June 17, 2024
Summary
Strong laser fields alter molecular potentials, making photodissociation studies difficult. This research shows geometric phase controls quantum interference in D2+ dissociation dynamics using VUV+IR lasers.
Area of Science:
- Quantum dynamics
- Molecular physics
- Strong-field chemistry
Background:
- Investigating molecular photodissociation in strong fields is challenging due to field-induced potential changes.
- Understanding reaction mechanisms requires advanced theoretical approaches.
Purpose of the Study:
- To explore the strong-field photodissociation dynamics of D2+ in a synthesized VUV + IR laser field.
- To investigate the control of quantum interference phenomena in molecular photodissociation.
Main Methods:
- Solving the three-dimensional time-dependent Schrödinger equation.
- Utilizing a two-color laser field (266 nm VUV + 800 nm IR).
Main Results:
- Observed Aharonov-Bohm-like quantum interference in photofragment angular distribution.
- Demonstrated control over quantum interference by varying VUV light ellipticity.
- Attributed interference to geometric phase accumulation on light-induced potential energy surfaces.
Conclusions:
- Geometric phase offers a pathway to control quantum interference in molecular photodissociation.
- This finding has implications for controlling chemical reactions in small molecular systems using geometric phase.
