Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Sakae Kawato"'
Autor:
Sakae Kawato
Publikováno v:
Photonics, Vol 10, Iss 11, p 1239 (2023)
To increase the efficiency of laser oscillators by overcoming losses, the unsaturated gain must be increased. For this purpose, high-intensity pumping, typically higher than 100 kW/cm2, is effective. However, the temperature increase and strong therm
Externí odkaz:
https://doaj.org/article/36c27c9f07e64bdf88cab37bab9bee10
Autor:
Sakae Kawato, Toshiki Kawashima
Publikováno v:
Applied Sciences, Vol 12, Iss 10, p 4815 (2022)
Despite the importance of improving the efficiency of lasers in order to expand their utility range, the improvement of the efficiency of Ti:sapphire lasers has not progressed due to their high crystal losses. Therefore, we improved the efficiency of
Externí odkaz:
https://doaj.org/article/8d3b924e87ad487cb57f791c0095d675
Autor:
Takeshi Yoshida, Hiroaki Okunishi, Keisuke Kyomoto, Kento Kato, Kyosuke Shimabayashi, Shinichi Inayoshi, Motoki Morioka, Sakae Kawato
Publikováno v:
Applied Sciences, Vol 5, Iss 4, Pp 1431-1439 (2015)
Nonlinear ultrashort pulse propagation in a mode-locked Yb:YAG laser with a highly nonlinear intra-cavity medium is analyzed using a nonlinear Schrodinger equation. The output spectra are extended by the increased laser intensity, and spectral bandwi
Externí odkaz:
https://doaj.org/article/c582fb59cf754c9fbef08d3ec3dc7c0c
Publikováno v:
Frontiers in Optics / Laser Science.
we analyzed theoretically the efficiency of blue laser diode pumped Ti:sapphire laser. We theoretically improved efficiency of Ti:sapphire laser under Pump-band Fraction[1] and Pump-induced Loss[2] by high intenticy pumping.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::243ecf4ce168ad4a540aaba1718f9095
https://doi.org/10.1364/fio.2020.jtu1a.26
https://doi.org/10.1364/fio.2020.jtu1a.26
Publikováno v:
14th Pacific Rim Conference on Lasers and Electro-Optics (CLEO PR 2020).
We quantified the influence of 445 nm pumping for the efficiency of Ti:sapphire laser. Moreover, theoretical analysis shows that efficiency increasement is achieved by high intensity pumping even at 445 nm pumping. © 2019 The Authors
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::904005106ea786e87eee7c1bf70c3bcf
https://doi.org/10.1364/cleopr.2020.p1_21
https://doi.org/10.1364/cleopr.2020.p1_21
Publikováno v:
Frontiers in Optics / Laser Science.
A laser-diode-pumped short cavity CW laser was investigated. The beam quality factors of the pump beam for the slow axis was 20. The optical conversion efficiency of 58.4% versus incident pump power was obtained.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::902ab81f766b3f56b8b50d5a7f22daa4
https://doi.org/10.1364/fio.2020.jtu1a.20
https://doi.org/10.1364/fio.2020.jtu1a.20
Publikováno v:
Frontiers in Optics / Laser Science.
We analyzed numerically the influence of loss position and pump power on the efficiency in the oscillator of a mode-locked laser cavity. We reported the increasing pump power is effective in improving efficiency.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::020b3b04299246d4aeac9f3cb774ea49
https://doi.org/10.1364/fio.2020.jtu1a.19
https://doi.org/10.1364/fio.2020.jtu1a.19
Publikováno v:
14th Pacific Rim Conference on Lasers and Electro-Optics (CLEO PR 2020).
We present a highly efficient laser-diode (LD)-pumped continuous-wave (CW) short cavity Yb:YAG laser by high intensity pumping. The result showed that the optical-to- optical conversion efficiency versus incident pump power was 61%.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a61d19d45c738ecda4ff155a2110e9d3
https://doi.org/10.1364/cleopr.2020.p1_1
https://doi.org/10.1364/cleopr.2020.p1_1
Publikováno v:
Laser Physics Letters. 18:105001
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4577238b8d150ae24615c3bf5a24188c
https://doi.org/10.1088/1612-202x/ac20dd
https://doi.org/10.1088/1612-202x/ac20dd
Publikováno v:
Frontiers in Optics + Laser Science APS/DLS.
A single-emitter laser-diode-pumped continuous-wave hemispherical short cavity laser was investigated. As a result, the optical-to-optical conversion efficiency of 57% for the incident pump power was obtained by high intensity pumping.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce2157948882c243fd054ef82643f0b4
https://doi.org/10.1364/fio.2019.jw3a.104
https://doi.org/10.1364/fio.2019.jw3a.104