Molecular orientation echoes via concerted terahertz and near-IR excitations

Ran Damari, Amit Beer, Dina Rosenberg, Sharly Fleischer*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A new and efficient method for orientation echo spectroscopy is presented and realized experimentally. The excitation scheme utilizes concerted rotational excitations by both ultrashort terahertz and near-IR pulses and its all-optical detection is enabled by the molecular orientation-induced second harmonic method [J. Phys. Chem. A 126, 3732 (2022)]. This method provides practical means for orientation echo spectroscopy of gas phase molecules and highlights the intriguing underlying physics of coherent rotational dynamics induced by judiciously-orchestrated interactions with both resonant (terahertz) and nonresonant (NIR) fields.

Original languageEnglish
Pages (from-to)44464-44471
Number of pages8
JournalOptics Express
Issue number25
StatePublished - 5 Dec 2022


FundersFunder number
Wolfson FoundationPR/ec/20419
Israel Science Foundation1856/22, 926/18
PAZY Foundation


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