Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Masahide Okazaki"'
Autor:
Ryosuke Noro, Masahide Okazaki, Ikuo Mizobata, Masahiro Uemukai, Tomoyuki Tanikawa, Ryuji Katayama
Publikováno v:
Japanese Journal of Applied Physics. 61:072006
Watt-class wavelength conversion is expected by enlarging the mode size of the channel waveguides to dozens of micrometers to avoid optical damage with high-power pump lasers. In this work, uniform periodically-poled (PP) structures in MgO doped stoi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15002c9a4a6271f7f0cd4db5bfaada56
https://doi.org/10.35848/1347-4065/ac7837
https://doi.org/10.35848/1347-4065/ac7837
Autor:
Masahide Okazaki, Toshiaki Suhara
Publikováno v:
Journal of Lightwave Technology. 33:5195-5200
We propose and demonstrate an electro-optic Raman–Nath spatial light modulator with a wide acceptable angle using cascaded periodically-poled gratings. The modulator has three grating stages of harmonic periods for enhancement of the extinction rat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee422de55309d672b088f653cdb9e4a2
https://doi.org/10.1109/jlt.2015.2496999
https://doi.org/10.1109/jlt.2015.2496999
Autor:
Toshiyuki Inoue, Masato Ishino, Atsushi Sanada, Kazuhisa Yamamoto, Hiroshi Murata, Yuta Hayashi, Masahide Okazaki
Publikováno v:
2017 22nd Microoptics Conference (MOC).
We have proposed a new electro-optic Bragg-diffraction type spatial modulator/deflector using multi-stage polarization-reversed structures, which can deflect a laser beam with a high speed over GHz. In this paper, the operational principle and deflec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6931eaaa3723fc82de67651458134dca
https://doi.org/10.23919/moc.2017.8244519
https://doi.org/10.23919/moc.2017.8244519
Publikováno v:
IEEE Photonics Technology Letters. 27:1646-1648
We propose and demonstrate an electro-optic spatial light modulator using a deep-proton-exchanged waveguide in periodically-poled MgO:s-LiTaO3 thin crystal for UV laser light. The fine pixel profile, the good contrast, and the low driving voltage of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8457ac05c549d83a6a87131856f6588
https://doi.org/10.1109/lpt.2015.2433313
https://doi.org/10.1109/lpt.2015.2433313
Autor:
Masahide Okazaki, Toshiaki Suhara
Publikováno v:
IEEE Photonics Technology Letters. 26:2334-2336
We propose a new type of electro-optic modulator consisting of cascaded periodically poled Raman–Nath gratings as a building block of a 1-D spatial light modulator with a wide acceptance angle. The modulator has two grating stages of harmonic perio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adbd7d3df6602565df2e74a5e7aa5544
https://doi.org/10.1109/lpt.2014.2355913
https://doi.org/10.1109/lpt.2014.2355913
Autor:
Masahide Okazaki, Toshiaki Suhara
Publikováno v:
2015 20th Microoptics Conference (MOC).
We propose and demonstrate a new type of electro-optic spatial light modulator consisting of cascaded periodically-poled Raman-Nath gratings. The modulator of 1024 pixels for practical application was designed through the beam propagation method simu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f71bcc2eee65fcc41963440064cc3ba
https://doi.org/10.1109/moc.2015.7416510
https://doi.org/10.1109/moc.2015.7416510
Publikováno v:
IEEE Photonics Technology Letters. 23:1709-1711
We propose and demonstrate an electrooptic Bragg deflection optical modulator using a periodically poled MgO:s- LiTaO3 thin crystal for ultraviolet (UV) laser light. This modulator is a building block for implementation of a one-dimensional spatial l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44ee90ccab0a7995fe689022e41c0b4c
https://doi.org/10.1109/lpt.2011.2167745
https://doi.org/10.1109/lpt.2011.2167745
Publikováno v:
Japanese Journal of Applied Physics. 54:070301
We developed deep-proton exchanged (DPE) and annealed waveguides in MgO:stoichiometric-LiTaO3 crystal. We performed DPE in pyrophosphoric acid at 230 °C for 20 min and measured mode size and depth dependent on the annealing duration. High-quality pl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f348226eb5eba2827d2c1010211a591b
https://doi.org/10.7567/jjap.54.070301
https://doi.org/10.7567/jjap.54.070301
Publikováno v:
Lens and Optical Systems Design.
This paper explains a new optical recording unit with 80 semiconductor lasers ((lambda) equals 780 nm), and it can be used in the drum rotation type prepress equipment for film exposure. The optical system consists of three units: a unit composed of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61fd4b438670f93c484c4f3be3b6c0ba
https://doi.org/10.1117/12.142840
https://doi.org/10.1117/12.142840
Publikováno v:
Japanese Journal of Applied Physics; Jul2015, Vol. 54 Issue 7, p1-1, 1p