Kazumoto Hosaka
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Explore the profile of Kazumoto Hosaka including associated specialties, affiliations and a list of published articles.
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Articles
15
Citations
16
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Recent Articles
1.
Kobayashi T, Takamizawa A, Akamatsu D, Kawasaki A, Nishiyama A, Hosaka K, et al.
Phys Rev Lett
. 2022 Dec;
129(24):241301.
PMID: 36563281
We search for ultralight scalar dark matter candidates that induce oscillations of the fine structure constant, the electron and quark masses, and the quantum chromodynamics energy scale with frequency comparison...
2.
Hanisch R, Chalk S, Coulon R, Cox S, Emmerson S, Flamenco Sandoval F, et al.
Nature
. 2022 May;
605(7909):222-224.
PMID: 35538362
No abstract available.
3.
Hisai Y, Akamatsu D, Kobayashi T, Okubo S, Inaba H, Hosaka K, et al.
Opt Express
. 2019 Mar;
27(5):6404-6414.
PMID: 30876226
We demonstrate an 8-branch Er:fiber frequency comb with seven application ports, which can be individually optimized for applications with different wavelengths. The beat between the comb and a cw laser...
4.
Kobayashi T, Akamatsu D, Hisai Y, Tanabe T, Inaba H, Suzuyama T, et al.
IEEE Trans Ultrason Ferroelectr Freq Control
. 2018 Sep;
65(12):2449-2458.
PMID: 30235125
We report an uncertainty evaluation of an Yb optical lattice clock with a total fractional uncertainty of 3.6×10 , which is mainly limited by the lattice-induced light shift and the...
5.
Akamatsu D, Kobayashi T, Hisai Y, Tanabe T, Hosaka K, Yasuda M, et al.
IEEE Trans Ultrason Ferroelectr Freq Control
. 2018 Jun;
65(6):1069-1075.
PMID: 29856725
We have developed an optical lattice clock that can operate in dual modes: a strontium (Sr) clock mode and an ytterbium (Yb) clock mode. Dual-mode operation of the Sr-Yb optical...
6.
Kobayashi T, Akamatsu D, Nishida Y, Tanabe T, Yasuda M, Hong F, et al.
Opt Express
. 2016 Jul;
24(11):12142-50.
PMID: 27410134
We demonstrate a compact and robust method for generating a 399-nm light resonant on the S - P transition in ytterbium using a single-pass periodically poled LiNbO waveguide for second...
7.
Kobayashi T, Akamatsu D, Hosaka K, Inaba H, Okubo S, Tanabe T, et al.
Opt Express
. 2015 Sep;
23(16):20749-59.
PMID: 26367927
We demonstrate a compact iodine-stabilized laser operating at 531 nm using a coin-sized light source consisting of a 1062-nm distributed-feedback diode laser and a frequency-doubling element. A hyperfine transition of...
8.
Akamatsu D, Yasuda M, Inaba H, Hosaka K, Tanabe T, Onae A, et al.
Opt Express
. 2015 Jan;
22(26):32199.
PMID: 25607184
We correct the errors in the uncertainty budget. The determined ratio (ν/ν) is corrected to be 1.207 507 039 343 341 2(17) with a fractional standard uncertainty of 1.4 ×...
9.
Akamatsu D, Yasuda M, Inaba H, Hosaka K, Tanabe T, Onae A, et al.
Opt Express
. 2014 Apr;
22(7):7898-905.
PMID: 24718165
The frequency ratio of the (1)S(0)(F = 1/2)-(3)P(0)(F = 1/2) clock transition in (171)Yb and the (1)S(0)(F = 9/2)-(3)P(0)(F = 9/2) clock transition in (87)Sr is measured by an optical-optical...
10.
Inaba H, Hosaka K, Yasuda M, Nakajima Y, Iwakuni K, Akamatsu D, et al.
Opt Express
. 2013 Apr;
21(7):7891-6.
PMID: 23571880
We propose a novel, high-performance, and practical laser source system for optical clocks. The laser linewidth of a fiber-based frequency comb is reduced by phase locking a comb mode to...