TY - JOUR
T1 - Input optics systems of the KAGRA detector during O3GK
AU - the KAGRA Collaboration
AU - Akutsu, T.
AU - Ando, M.
AU - Arai, K.
AU - Arai, Y.
AU - Araki, S.
AU - Araya, A.
AU - Aritomi, N.
AU - Asada, H.
AU - Aso, Y.
AU - Bae, S.
AU - Bae, Y.
AU - Baiotti, L.
AU - Bajpai, R.
AU - Barton, M. A.
AU - Cannon, K.
AU - Cao, Z.
AU - Capocasa, E.
AU - Chan, M.
AU - Chen, C.
AU - Chen, K.
AU - Chen, Y.
AU - Chiang, C. I.
AU - Chu, H.
AU - Chu, Y. K.
AU - Eguchi, S.
AU - Enomoto, Y.
AU - Flaminio, R.
AU - Fujii, Y.
AU - Fujikawa, Y.
AU - Fukunaga, M.
AU - Fukushima, M.
AU - Furuhata, T.
AU - Gao, D.
AU - Ge, G. G.
AU - Ha, S.
AU - Hagiwara, A.
AU - Haino, S.
AU - Han, W. B.
AU - Hasegawa, K.
AU - Hattori, K.
AU - Hayakawa, H.
AU - Hayama, K.
AU - Himemoto, Y.
AU - Hiranuma, Y.
AU - Hirata, N.
AU - Hirose, E.
AU - Hong, Z.
AU - Hsieh, B. H.
AU - Huang, G. Z.
AU - Lin, F. L.
N1 - Publisher Copyright:
© The Author(s) 2022.
PY - 2023/2/1
Y1 - 2023/2/1
N2 - KAGRA, the underground and cryogenic gravitational-wave detector, was operated for its solo observation from February 25 to March 10, 2020, and its first joint observation with the GEO 600 detector from April 7 to April 21, 2020 (O3GK). This study presents an overview of the input optics systems of the KAGRA detector, which consist of various optical systems, such as a laser source, its intensity and frequency stabilization systems, modulators, a Faraday isolator, mode-matching telescopes, and a high-power beam dump. These optics were successfully delivered to the KAGRA interferometer and operated stably during the observations. The laser frequency noise was observed to limit the detector sensitivity above a few kilohertz, whereas the laser intensity did not significantly limit the detector sensitivity.
AB - KAGRA, the underground and cryogenic gravitational-wave detector, was operated for its solo observation from February 25 to March 10, 2020, and its first joint observation with the GEO 600 detector from April 7 to April 21, 2020 (O3GK). This study presents an overview of the input optics systems of the KAGRA detector, which consist of various optical systems, such as a laser source, its intensity and frequency stabilization systems, modulators, a Faraday isolator, mode-matching telescopes, and a high-power beam dump. These optics were successfully delivered to the KAGRA interferometer and operated stably during the observations. The laser frequency noise was observed to limit the detector sensitivity above a few kilohertz, whereas the laser intensity did not significantly limit the detector sensitivity.
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U2 - 10.1093/ptep/ptac166
DO - 10.1093/ptep/ptac166
M3 - Article
AN - SCOPUS:85160865287
SN - 2050-3911
VL - 2023
JO - Progress of Theoretical and Experimental Physics
JF - Progress of Theoretical and Experimental Physics
IS - 2
M1 - 023F01
ER -