Generation of $γ$-photons and pairs with transverse orbital angular momentum via spatiotemporal optical vortex pulse
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| Format: | Preprint |
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2024
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| _version_ | 1866913281701052416 |
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| author | Zhang, Cui-Wen Zhang, De-Sheng Xie, Bai-Song |
| author_facet | Zhang, Cui-Wen Zhang, De-Sheng Xie, Bai-Song |
| contents | We present the generation of well-collimated $γ$-photons and pairs with extrinsic transverse orbital angular momentum (TOAM) through the head-on collision of an intense spatiotemporal optical vortex (STOV) pulse carrying intrinsic TOAM with a high-energy electron beam. It is found that the TOAM of STOV pulse remains almost unchanged, and the TOAM is conserved in the center-of-mass frame (CMF). Moreover, there exhibits duality for particles TOAM in the CMF and laboratory frame (LF) when the initial location of high-energy electron beam is different. Furthermore, the TOAM of $γ$-photons in the CMF increases while that of positrons decreases as the topological charge of STOV pulse increases, whereas in the LF, the TOAM of both $γ$-photons and positrons decreases. And the result under the same pulse intensity is better than that under the same pulse energy. The increase in the initial energy of high-energy electrons leads to an enhancement of the TOAM for both $γ$-photons and positrons in both frames. $γ$-photons and electrons/positrons with TOAM as a new degree of freedom maybe have an extensive applications in optical communication, astrophysics and nanomaterials and so on. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2403_16414 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Generation of $γ$-photons and pairs with transverse orbital angular momentum via spatiotemporal optical vortex pulse Zhang, Cui-Wen Zhang, De-Sheng Xie, Bai-Song Optics High Energy Physics - Phenomenology Quantum Physics We present the generation of well-collimated $γ$-photons and pairs with extrinsic transverse orbital angular momentum (TOAM) through the head-on collision of an intense spatiotemporal optical vortex (STOV) pulse carrying intrinsic TOAM with a high-energy electron beam. It is found that the TOAM of STOV pulse remains almost unchanged, and the TOAM is conserved in the center-of-mass frame (CMF). Moreover, there exhibits duality for particles TOAM in the CMF and laboratory frame (LF) when the initial location of high-energy electron beam is different. Furthermore, the TOAM of $γ$-photons in the CMF increases while that of positrons decreases as the topological charge of STOV pulse increases, whereas in the LF, the TOAM of both $γ$-photons and positrons decreases. And the result under the same pulse intensity is better than that under the same pulse energy. The increase in the initial energy of high-energy electrons leads to an enhancement of the TOAM for both $γ$-photons and positrons in both frames. $γ$-photons and electrons/positrons with TOAM as a new degree of freedom maybe have an extensive applications in optical communication, astrophysics and nanomaterials and so on. |
| title | Generation of $γ$-photons and pairs with transverse orbital angular momentum via spatiotemporal optical vortex pulse |
| topic | Optics High Energy Physics - Phenomenology Quantum Physics |
| url | https://arxiv.org/abs/2403.16414 |