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Gas-plasma-based generation of broadband terahertz radiation with 640 mW average power
- Source :
- Optics Letters, Optics letters 46(20), 5256-(2021). doi:10.1364/OL.442374
- Publication Year :
- 2021
-
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.
- Subjects :
- Chirped pulse amplification
Ytterbium
Materials science
Terahertz radiation
FOS: Physical sciences
chemistry.chemical_element
02 engineering and technology
Radiation
7. Clean energy
01 natural sciences
010309 optics
Optics
0103 physical sciences
Broadband
ddc:530
Heterodyne detection
business.industry
Amplifier
021001 nanoscience & nanotechnology
500 kHz
Atomic and Molecular Physics, and Optics
chemistry
0210 nano-technology
business
Optics (physics.optics)
Physics - Optics
Subjects
Details
- ISSN :
- 10944087
- Database :
- OpenAIRE
- Journal :
- Optics Letters
- Accession number :
- edsair.doi.dedup.....9cdbbad2b473428dea63e6380f5b5977
- Full Text :
- https://doi.org/10.1364/ol.442374