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Efficient terahertz generation by optical rectification at 1035 nm
Open accessAbstract
We demonstrate efficient generation of THz pulses by optical rectification of 1.03 um wavelength laser pulses in LiNbO3 using tilted pulse front excitation for velocity matching between the optical and THz fields. Pulse energies of 100 nJ with a spectral bandwidth of up to 2.5 THz were obtained at a pump energy of 400 uJ and 300 fs pulse duration. This conversion efficiency of 2.5x10(-4) was an order of magnitude higher than that obtained with collinear optical recitification in GaP, and far higher still than that measured using ZnTe in an optimized geometry. Using a simple model we demonstrate that two- and three-photon absorption strongly limit the THz generation efficiency at high pump fluences in ZnTe and GaP.
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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 [16]
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Tutorial: An introduction to terahertz time domain spectroscopy (THz-TDS)
Neu, J., & Schmuttenmaer, C. A. (2018) · Journal of Applied Physics · doi:10.1063/1.5047659 · Cited by 675
Intense ultrashort terahertz pulses: generation and applications
Hoffmann, M. C., & Fülöp, J. A. (2011) · Journal of Physics D: Applied Physics · doi:10.1088/0022-3727/44/8/083001 · Cited by 359
Self-citationMatter manipulation with extreme terahertz light: Progress in the enabling THz technology
Salén, P., Basini, M., Bonetti, S., Hebling, J., Krasilnikov, M., Nikitin, A. Y., Shamuilov, G., Tibai, Z., Zhaunerchyk, V., & Goryashko, V. (2019) · Physics Reports · doi:10.1016/j.physrep.2019.09.002 · Cited by 262
Self-citationLloyd-Hughes, J., Chopra, N., Deveikis, J., Pandya, R., & Woolley, J. (2025) · Journal of Infrared, Millimeter, and Terahertz Waves · doi:10.1007/s10762-025-01052-w · Cited by 6
“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.”
Metadata
- Authors
- Hoffmann, M. C., Yeh, K.-L., Hebling, J., & Nelson, K. A.
- Affiliations
- Massachusetts Institute of Technology (US)
- Venue
- Optics Express
- Publisher
- Optica Publishing Group
- Published
- 2007
- Volume
- 15
- Issue
- 18
- Pages
- 11706
- ISSN
- 1094-4087 (ISSN-L)
- OpenAlex
- W2026863242
- Cited by
- 193
- References
- 0
- Citations by year
- 2026: 4 · 2025: 11 · 2024: 5 · 2023: 16 · 2022: 8 · 2021: 15 · 2020: 7 · 2019: 11 · 2018: 15 · 2017: 8 · 2016: 13 · 2015: 6 · 2014: 14 · 2013: 9 · 2012: 12
- FWCI
- 10.09
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Optics Express (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Office of Naval Research
- 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
- terahertz generation, optical rectification, lithium niobate, tilted pulse front, velocity matching, conversion efficiency, two-photon absorption, three-photon absorption, ZnTe, GaP, ultrashort laser pulses
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