Characterization of the nonlinear THz focus for 2D THz spectroscopy
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1.
California Institute of Technology
Abstract
We present a sensitive imaging method capable of the selective characterization of the nonlinear THz beam profile, providing a direct handle to optimize 𝜒(3) light-matter interactions that are critical to two-dimensional (2D) THz spectroscopies. In particular, this method facilitates the development of experimentally challenging 2D THz spectroscopies with multiple THz emitters, which enables direct investigations of fast picosecond dynamics in liquids and solids that are challenging in single-emitter 2D THz spectroscopic setups.
Copyright and License
© 2024 Optica Publishing Group.
Acknowledgement
H.W.L. acknowledges financial support from the Ministry of Education of Taiwan.
Funding
National Science Foundation (CSDM-A program CHE-1665467); National Aeronautics and Space Administration (APRA program 80NSSC21K1467); Ministry of Education.
Data Availability
Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.
Conflict of Interest
The authors declare no conflicts of interest.
Additional details
- ISSN
- 1520-8540
- National Science Foundation
- CHE-1665467
- National Aeronautics and Space Administration
- 80NSSC21K1467
- Ministry of Education
- Caltech groups
- Division of Geological and Planetary Sciences