Spatial alignment and orientation of molecules in intense laser fields of femtosecond duration

Jianxin Chen; Xingshan Jiang; Xiangxin Chen

doi:10.1117/12.667185

23 December 2005 Spatial alignment and orientation of molecules in intense laser fields of femtosecond duration

Jianxin Chen, Xingshan Jiang, Xiangxin Chen

Author Affiliations +

Proceedings Volume 6028, ICO20: Lasers and Laser Technologies; 60281B (2005) https://doi.org/10.1117/12.667185
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

The rotation equation for angle θ between molecular axis and laser polarization direction that described spatial alignment and orientation of molecules in intense femtosecond laser fields has been deduced. A Gaussian laser pulse and the increasing of internuclear distance during the process of molecular muti-electron dissociative ionization and Coulomb explosion are considered. The orientating process of molecules N₂, H₂, CO, Br₂, I₂, CO₂, and CS₂ is investigated by solving numerically the deduced rotation equation for angle. Calculating results show that the linear polarizability and the damping force play an important role in the angular rotation of molecules in conditions of 800nm laser wavelength and 10¹⁵W/cm² laser intensity. Calculating results also indicate that the majority of dynamic alignment for the light molecule N₂, H₂, CO and CO₂ takes place before the molecule ionizes and begins to dissociate. However for the heavy molecule Br₂, I₂ and CS₂, most dynamic alignment occurs during the process of molecular dissociation. The extent of molecular alignment are extensively calculated and discussed.

Citation Download Citation

Jianxin Chen, Xingshan Jiang, and Xiangxin Chen "Spatial alignment and orientation of molecules in intense laser fields of femtosecond duration", Proc. SPIE 6028, ICO20: Lasers and Laser Technologies, 60281B (23 December 2005); https://doi.org/10.1117/12.667185

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Molecules

Molecular lasers

Bromine

Ionization

Polarization

Pulsed laser operation

Femtosecond phenomena

Show All Keywords

Keywords/Phrases

Search In:

Publication Years