Gas-plasma-based generation of broadband terahertz radiation with 640 mW average power
Buldt J, Stark H, Mueller M, Grebing C, Jauregui C, Limpert J (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 46
Pages Range: 5256-5259
Journal Issue: 20
DOI: 10.1364/OL.442374
Abstract
We present a high-power source of broadband terahertz (THz) radiation covering the whole THz spectral region (0.1–30 THz). The two-color gas plasma generation process is driven by a state-of-the-art ytterbium fiber chirped pulse amplification system based on coherent combination of 16 rod-type amplifiers. Prior to the THz generation, the pulses are spectrally broadened in a multipass cell and compressed to 37 fs with a pulse energy of 1.3 mJ at a repetition rate of 500 kHz. A gas-jet scheme has been employed for the THz generation, increasing the efficiency of the process to 0.1%. The air-biased coherent detection scheme is implemented to characterize the full bandwidth of the generated radiation. A THz average power of 640 mW is generated, which is the highest THz average power achieved to date. This makes this source suitable for a variety of applications, e.g., spectroscopy of strongly absorbing samples or driving nonlinear effects for the studies of material properties.
Involved external institutions
Germany (DE)How to cite
APA:
Buldt, J., Stark, H., Mueller, M., Grebing, C., Jauregui, C., & Limpert, J. (2021). Gas-plasma-based generation of broadband terahertz radiation with 640 mW average power. Optics Letters, 46(20), 5256-5259. https://doi.org/10.1364/OL.442374
MLA:
Buldt, Joachim, et al. "Gas-plasma-based generation of broadband terahertz radiation with 640 mW average power." Optics Letters 46.20 (2021): 5256-5259.
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