Abstract
A feasible scheme is proposed to enhance the molecular alignment by shaping the femtosecond laser pulse with a polynomial phase modulation that involves the second and third order dispersions. It is shown that the field-free molecular alignment can be obtained adiabatically during the interaction with the shaped femtosecond laser pulse, and can be reproduced at full rotational periods with the same degree as that at the peak of laser pulse when the shaped femtosecond laser pulse is gone off. It is also shown that the molecular alignment behavior by the shaped femtosecond laser pulse is same as that by the slow turn-on and rapid turn-off laser pulse in previous study, but the shaped femtosecond laser pulse can induce slightly higher alignment degree due to the different rising edge. In addition, it is indicated that our proposed scheme can be experimentally realized by using a programmable 4f-configuration zero-dispersion pulse shaper combined with a one-dimensional liquid-crystal spatial light modulator.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
