Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Enhancing laser beam performance by interfering intense laser beamlets. / Morace, A.; Iwata, N.; Sentoku, Y.; Mima, K.; Arikawa, Y.; Yogo, A.; Andreev, A.; Tosaki, S.; Vaisseau, X.; Abe, Y.; Kojima, S.; Sakata, S.; Hata, M.; Lee, S.; Matsuo, K.; Kamitsukasa, N.; Norimatsu, T.; Kawanaka, J.; Tokita, S.; Miyanaga, N.; Shiraga, H.; Sakawa, Y.; Nakai, M.; Nishimura, H.; Azechi, H.; Fujioka, S.; Kodama, R.
в: Nature Communications, Том 10, № 1, 2995, 01.12.2019.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Enhancing laser beam performance by interfering intense laser beamlets
AU - Morace, A.
AU - Iwata, N.
AU - Sentoku, Y.
AU - Mima, K.
AU - Arikawa, Y.
AU - Yogo, A.
AU - Andreev, A.
AU - Tosaki, S.
AU - Vaisseau, X.
AU - Abe, Y.
AU - Kojima, S.
AU - Sakata, S.
AU - Hata, M.
AU - Lee, S.
AU - Matsuo, K.
AU - Kamitsukasa, N.
AU - Norimatsu, T.
AU - Kawanaka, J.
AU - Tokita, S.
AU - Miyanaga, N.
AU - Shiraga, H.
AU - Sakawa, Y.
AU - Nakai, M.
AU - Nishimura, H.
AU - Azechi, H.
AU - Fujioka, S.
AU - Kodama, R.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Increasing the laser energy absorption into energetic particle beams represents a longstanding quest in intense laser-plasma physics. During the interaction with matter, part of the laser energy is converted into relativistic electron beams, which are the origin of secondary sources of energetic ions, γ-rays and neutrons. Here we experimentally demonstrate that using multiple coherent laser beamlets spatially and temporally overlapped, thus producing an interference pattern in the laser focus, significantly improves the laser energy conversion efficiency into hot electrons, compared to one beam with the same energy and nominal intensity as the four beamlets combined. Two-dimensional particle-in-cell simulations support the experimental results, suggesting that beamlet interference pattern induces a periodical shaping of the critical density, ultimately playing a key-role in enhancing the laser-to-electron energy conversion efficiency. This method is rather insensitive to laser pulse contrast and duration, making this approach robust and suitable to many existing facilities.
AB - Increasing the laser energy absorption into energetic particle beams represents a longstanding quest in intense laser-plasma physics. During the interaction with matter, part of the laser energy is converted into relativistic electron beams, which are the origin of secondary sources of energetic ions, γ-rays and neutrons. Here we experimentally demonstrate that using multiple coherent laser beamlets spatially and temporally overlapped, thus producing an interference pattern in the laser focus, significantly improves the laser energy conversion efficiency into hot electrons, compared to one beam with the same energy and nominal intensity as the four beamlets combined. Two-dimensional particle-in-cell simulations support the experimental results, suggesting that beamlet interference pattern induces a periodical shaping of the critical density, ultimately playing a key-role in enhancing the laser-to-electron energy conversion efficiency. This method is rather insensitive to laser pulse contrast and duration, making this approach robust and suitable to many existing facilities.
UR - http://www.scopus.com/inward/record.url?scp=85068464282&partnerID=8YFLogxK
U2 - 10.1038/s41467-019-10997-1
DO - 10.1038/s41467-019-10997-1
M3 - Article
C2 - 31278266
AN - SCOPUS:85068464282
VL - 10
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 2995
ER -
ID: 53220147