Zobrazeno 1 - 10
of 1 412
pro vyhledávání: '"Yamashita, Shinji."'
Publikováno v:
Journal of Lightwave Technology, 2024
This paper presents analytical results on the accuracy of fiber-longitudinal optical power monitoring (LPM) at arbitrary positions. To quantify the accuracy, the position-wise variance and power-profile SNR of LPM are defined and analyzed, yielding f
Externí odkaz:
http://arxiv.org/abs/2410.12602
Autor:
Ye, Guanyu, Dai, Maolin, Liu, Bowen, Ma, Yifan, Shirahata, Takuma, Yamashita, Shinji, Set, Sze Yun
For the first time, we introduce a rapid wavelength-swept, passively mode-locked fiber laser in an all-polarization-maintaining and all-fiber configuration. Achieving an exceptional wavelength sweep rate of up to 19 kHz through external modulation of
Externí odkaz:
http://arxiv.org/abs/2406.15419
Autor:
Hamilton, Rhona L, Horiuchi, Moeri, Liu, Bowen, Shirahata, Takuma, Set, Sze Y, Yamashita, Shinji
The threshold pump power for modelocking decreased by 18% when the temperature was increased from 25 to 100 degrees C, where a SWCNT/PDMS coated tapered fiber was used as the saturable absorber in a fiber laser. Further, the pump power at which multi
Externí odkaz:
http://arxiv.org/abs/2404.18449
Repetition-rate-scanned lasers are practical in accordion frequency comb generation that serves as a variable gearbox connecting optical and radio wave domains. Rapid and wide-range scanned repetition rate can benefit versatile purposes, however scan
Externí odkaz:
http://arxiv.org/abs/2404.16303
Autor:
Dai, Maolin, Liu, Bowen, Ma, Yifan, Shirahata, Takuma, Yang, Ruoao, Zhang, Zhigang, Set, Sze Yun, Yamashita, Shinji
Publikováno v:
Appl. Phys. Express 17(6), 062001 (2024)
We demonstrate a 783-MHz fundamental repetition rate mode-locked Er-doped all-fiber ring laser with a pulse width of 623 fs. By using carbon nanotubes (CNT) saturable absorber (SA), a relatively low self-starting pump threshold of 108 mW is achieved.
Externí odkaz:
http://arxiv.org/abs/2404.11165
Autor:
Ye, Guanyu, Liu, Bowen, Dai, Maolin, Ma, Yifan, Shirahata, Takuma, Yamashita, Shinji, Set, Sze Yun
For the first time, we present the pump power-controlled wavelength-tunable mode-locked fiber laser in the L-band (1565 nm to 1625 nm), achieved by all-polarization maintaining (all-PM) nonlinear polarization rotation (NPR). The wavelength of the las
Externí odkaz:
http://arxiv.org/abs/2402.04510
Autor:
Nakamura, Junko, Kakino, Yukari, Kataoka, Makoto, Yamashita, Shinji, Hishikawa, Yoshihiro, Minami, Keiko
Publikováno v:
In Journal of Pharmaceutical Sciences November 2024 113(11):3206-3215
Autor:
Dai, Maolin, Liu, Bowen, Ye, Guanyu, Shirahata, Takuma, Ma, Yifan, Yamaguchi, Naoki, Set, Sze Yun, Yamashita, Shinji
Publikováno v:
In Optics and Laser Technology September 2024 176
Autor:
Yamashita, Shinji
Publikováno v:
Phys. Rev. D 104, 086029 (2021)
We carry out the canonical analysis of a covariant version of unimodular gravity in terms of the connection representation. We then proceed to quantize this theory by implementing the Dirac procedure. We confirm whether and how the Kodama state, whic
Externí odkaz:
http://arxiv.org/abs/2110.13762
Autor:
Okugawa, Yoshinaga, Ohi, Masaki, Kitajima, Takahito, Higashi, Koki, Sato, Yuhki, Yamashita, Shinji, Uratani, Ryo, Shimura, Tadanobu, Imaoka, Hiroki, Kawamura, Mikio, Koike, Yuki, Yasuda, Hiromi, Yoshiyama, Shigeyuki, Okita, Yoshiki, Toiyama, Yuji
Publikováno v:
In Journal of Gastrointestinal Surgery July 2024 28(7):1045-1050