Enhanced molecular orientation via NIR-delay-THz scheme: Experimental results at room temperature

Ran Damari, Amit Beer, Eli Flaxer, Sharly Fleischer*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Light-induced orientation of gas phase molecules is a long-pursued goal in physics and chemistry. Here, we experimentally demonstrate a six-fold increase in the terahertz-induced orientation of iodomethane (CH3I) molecules at room temperature, provided by rotational pre-excitation with a moderately intense near-IR pulse. The paper highlights the underlying interference of multiple coherent transition pathways within the rotational coherence manifold and is analyzed accordingly. Our experimental and theoretical results provide desirable and practical means for all-optical experiments on oriented molecular ensembles.

Original languageEnglish
Article number014201
JournalJournal of Chemical Physics
Volume158
Issue number1
DOIs
StatePublished - 7 Jan 2023

Funding

FundersFunder number
Pazi foundation
Wolfson FoundationPR/ec/20419
Israel Science Foundation1856/22, 926/18

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