Single cycle terawatt twisted light pulses at midinfrared wavelengths above 10μm
Zhu, Xing-Long and Chen, Min and Weng, Su-Ming and McKenna, Paul and Sheng, Zheng-Ming and Zhang, Jie (2019) Single cycle terawatt twisted light pulses at midinfrared wavelengths above 10μm. Physical Review Applied, 12 (5). 054024. ISSN 2331-7043 (https://doi.org/10.1103/PhysRevApplied.12.054024)
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Abstract
Twisted light beams with orbital angular momentum provide an additional degree of freedom in controlling light-matter interactions, which are interesting for fundamental and applied research. Although there are various methods that can produce twisted laser beams at sub-micrometer or shorter wavelengths, it is still challenging to extend such beams to mid-infrared (mid-IR) wavelengths with relativistic intensity. Here, we present a promising scheme to generate such pulses converted through frequency downshift of intense driver optical pulses via a plasma-based photon decelerator. The resulting near-single-cycle vortex pulses cover a broad mid-IR spectral range up to 18 μm with energy conversion efficiency of 4.8% (energy ~150mJ) in the wavelength range above 7 μm. This long-wavelength infrared pulses at the terawatt level can be focused to relativistically high intensity, which may offer significant opportunities for high-field physics and ultrafast applications.
ORCID iDs
Zhu, Xing-Long, Chen, Min, Weng, Su-Ming, McKenna, Paul ORCID: https://orcid.org/0000-0001-8061-7091, Sheng, Zheng-Ming ORCID: https://orcid.org/0000-0002-8823-9993 and Zhang, Jie;-
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Item type: Article ID code: 70451 Dates: DateEvent11 November 2019Published21 October 2019AcceptedSubjects: Science > Physics Department: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 07 Nov 2019 10:09 Last modified: 15 Nov 2024 01:12 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/70451