Single-cycle terahertz pulses with amplitudes exceeding 1 MV/cm generated by optical rectification in LiNbO3
Open accessAbstract
Using the tilted-pump-pulse-front scheme, we generate single-cycle terahertz (THz) pulses by optical rectification of femtosecond laser pulses in LiNbO3. In our THz generation setup, the condition that the image of the grating coincides with the tilted-optical-pulse front is fulfilled to obtain optimal THz beam characteristics and pump-to-THz conversion efficiency. By using an uncooled microbolometer-array THz camera, it is found that the THz beam leaving the output face of the LN crystal can be regarded as a collimated rather than point source. The designed focusing geometry enables tight focus of the collimated THz beam with a spot size close to the diffraction limit, and the maximum THz electric field of 1.2 MV/cm is obtained.
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The electromagnetic pulses from common laser-based THz sources (photoconductive switches, optical rectification, spintronic emitters) are often close to single-cycle in shape.
“The electromagnetic pulses from common laser-based THz sources, such as photoconductive switches [14, 15], optical rectification [16, 17], and spintronic emitters [18] are often close to single-cycle in shape.”
From A Tutorial on THz Pulse Analysis: Accurate Retrieval of Pulse Arrival Times, Spectral Energy Density and Absolute Spectral Phase (2025) · cites this paper as [17]
Ti-Sa lasers successfully drive secondary sources of photons and particles, making the spectral range from THz to hard x-rays available via nonlinear optical processes.
“Ti-Sa lasers successfully drive secondary sources of photons and particles; using a variety of nonlinear optical processes, the spectral range from the THz [149] to hard x-rays becomes available.”
From Roadmap of ultrafast x-ray atomic and molecular physics (2018) · cites this paper as [149]
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- Authors
- Hirori, H., Doi, A., Blanchard, F., & Tanaka, K.
- Affiliations
- Kyoto University (JP)
- Olympus (Japan) (JP)
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2011-02-28
- Volume
- 98
- Issue
- 9
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2065558982
- Cited by
- 859
- References
- 22
- Citations by year
- 2026: 28 · 2025: 46 · 2024: 46 · 2023: 48 · 2022: 51 · 2021: 67 · 2020: 65 · 2019: 60 · 2018: 83 · 2017: 61 · 2016: 72 · 2015: 53 · 2014: 72 · 2013: 62 · 2012: 32
- FWCI
- 40.10
- Type
- journal article
- Language
- en
- Update notices
- correction (2013-12-17)
- Open access
- bronze
- doi.org
- Locations
- Applied Physics Letters (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- Espace ÉTS (ETS) (submittedVersion)
- arXiv (Cornell University)
- Funders
- Japan Society for the Promotion of Science (23760049)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Laser-Matter Interactions and Applications
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photorefractive and Nonlinear Optics
- Keywords
- single-cycle terahertz pulses, optical rectification, lithium niobate, femtosecond pulses, diffraction-limited focusing
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