Modeling the effects of high laser intensity on liquid crystals using real-time, time-dependent density functional theory (RT-TDDFT)

Kenneth L. Marshall; Julia Kubes; Vinayu Pendri; William Scullin

doi:10.1117/12.3027701

30 September 2024 Modeling the effects of high laser intensity on liquid crystals using real-time, time-dependent density functional theory (RT-TDDFT)

Kenneth L. Marshall, Julia Kubes, Vinayu Pendri, William Scullin

Author Affiliations +

Proceedings Volume PC13121, Liquid Crystals XXVIII; PC131210O (2024) https://doi.org/10.1117/12.3027701
Event: Organic Photonics + Electronics, 2024, San Diego, California, United States

Abstract

Liquid crystals (LC’s) are remarkably resistant to damage from high-energy single-or multi-pulse laser beams. Their laser-induced damage threshold (LIDT) depends on both the incident laser properties and pi-electron delocalization in the LC molecular structure. Real-time, time-dependent density functional theory (RT-TDDFT) was employed to model changes in pi-electron density distribution in LC’s as a function of time and laser fluence as 1053 nm, 22 fs laser pulses propagated though the material. Electron density maps reveal that changes in-pielectron density distribution become irreversible above a certain threshold fluence, which may signal the onset of chemical changes leading to laser damage.

Conference Presentation

Citation Download Citation

Kenneth L. Marshall, Julia Kubes, Vinayu Pendri, and William Scullin "Modeling the effects of high laser intensity on liquid crystals using real-time, time-dependent density functional theory (RT-TDDFT)", Proc. SPIE PC13121, Liquid Crystals XXVIII, PC131210O (30 September 2024); https://doi.org/10.1117/12.3027701

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