Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Chang-Min Ok"'
Optimization of pumping conditions with consideration of the thermal effects at ceramic Nd:YAG laser
Publikováno v:
Optik. 181:1085-1090
The authors describe the optimal pumping condition and output considering the media fracture and thermal lens effect at a 2 at.% ceramic Nd:YAG laser. The overall output characteristics according to a spot diameter of pump light, output degradation d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fde8346c8035a1b3330abb961a6597ba
https://doi.org/10.1016/j.ijleo.2018.12.043
https://doi.org/10.1016/j.ijleo.2018.12.043
Publikováno v:
Journal of Rheology. 62:1261-1270
In our earlier theoretical work [Lee and Muller, J. Rheol. 61, 1049–1059 (2017)], we proposed a design for a differential pressure extensional rheometer (DPER) on a chip. Here, we implement the DPER to evaluate the steady-state viscosity of a semid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbcf6e57890663bfda7da64b6c3fa681
https://doi.org/10.1122/1.5033499
https://doi.org/10.1122/1.5033499
Publikováno v:
Carbon. 125:280-288
We have measured the translational and rotational diffusion coefficients of graphene oxide (GO) sheets in water by using dynamic light scattering (DLS) and depolarized DLS. We show that the GO sheets in dilute regime translate laterally in such a way
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1bf524259a78c5bd8afff3819b0151e
https://doi.org/10.1016/j.carbon.2017.09.054
https://doi.org/10.1016/j.carbon.2017.09.054
Publikováno v:
Soft matter. 15(21)
We showed that GO domains at low pH are under a tube-rolling motion with a vorticity alignment at low shear rates. Mechanically robust micro-tubes were formed during tube-rolling. The micro-tubes were highly bendable and exhibited excellent elastic r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc0d546327fc3766c42ff516cadb348b
https://pubmed.ncbi.nlm.nih.gov/31106317
https://pubmed.ncbi.nlm.nih.gov/31106317
Autor:
Chang-Min Ok, Sung-Chan Park
Publikováno v:
Journal of the Optical Society of Korea. 18:574-581
This paper presents the design and evaluation of the optical zoom system for an LWIR camera. The 12.8operating wavelength range of this system is from $7.7{\mu}m$ to $12.8{\mu}m$ . Through a paraxial design and optimization process, we have obtained
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a2800ea6d701084a8f22a011e60ef07
https://doi.org/10.3807/josk.2014.18.5.574
https://doi.org/10.3807/josk.2014.18.5.574
Publikováno v:
Korean Journal of Optics and Photonics. 24:23-28
In this paper, an optical system was designed for 3D imaging laser radar with optical scanner. In order to make it easy to scan, the system was designed to inscribe the transmitting objective lens in the receiving lens. In transmitting optics, the be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4eaa8209ef9e7b7d5101b813d0824666
https://doi.org/10.3807/kjop.2013.24.1.023
https://doi.org/10.3807/kjop.2013.24.1.023
Publikováno v:
Korean Journal of Optics and Photonics. 17:455-460
The output characteristics of a ceramic Nd:YAC laser pumped by a fiber-coupled laser diode was investigated. An efficiency and a slope efficiency of 33.8 % and 39.3 % respectively were obtained, under an output coupler reflectance of 90.4 %. The lase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f76c7ccf5aad70fa071507fe1cdb235
https://doi.org/10.3807/kjop.2006.17.5.455
https://doi.org/10.3807/kjop.2006.17.5.455
Publikováno v:
International Journal of Simulation: Systems, Science & Technology; Dec2017, Vol. 18 Issue 4, p6.1-6.5, 5p