A study of single-crystal Cu2O stripes grown on fused-silica substrates by micro-chevron laser beam crystallization

2020 ◽  
Author(s):  
Brian Giraldo ◽  
Wenchang Yeh ◽  
Kaisei Otoge ◽  
Nobuhiko P. Kobayashi
Keyword(s):  
Laser Beam ◽  
Single Crystal ◽  
Fused Silica ◽  
Silica Substrates

CO2 Laser Crystallization of Silicon on Bulk Fused Silica

1981 ◽  
Vol 4 ◽  
Author(s):  
William G. Hawkins ◽  
Jerry G. Black ◽  
Clifford H. Griffiths
Keyword(s):  
Thin Film ◽  
Thermal Stress ◽  
Laser Beam ◽  
Single Crystal ◽  
Film Growth ◽  
Fused Silica ◽  
Thin Film Growth ◽  
Recrystallization Process ◽  
Laser Crystallization ◽  
Oriented Single Crystal

ABSTRACTA CO2 laser beam was used to heat bulk fused silica which had previously defined Si3N4 and Si02 encapsulated LPCVD polysilicon islands (25,μm × 100μm) on its surface. The recrystallization process produces single crystal islands under a wide variety of laser treatment parameters. Under certain conditions, the recrystallized islands exhibit a (100) plane parallel to the substrate. These results are the first demonstration of oriented single crystal thin film growth using island predefinition, which eliminates thermal stress induced microcracking resulting from the mismatch in expansion between silicon and bulk fused silica.

Crystallization of Cu2O Stripes on Fused Silica Substrates by Using Micro-Chevron Laser Beam

2021 ◽  
Author(s):  
William Bodeau ◽  
Kaisei Otoge ◽  
Wenchang Yeh ◽  
Nobuhiko P. Kobayashi
Keyword(s):  
Laser Beam ◽  
Fused Silica ◽  
Silica Substrates

scholarly journals Terahertz and Microwave Optical Properties of Single-Crystal Quartz and Vitreous Silica and the Behavior of the Boson Peak

2021 ◽  
Vol 11 (15) ◽  
pp. 6733
Author(s):  
Mira Naftaly ◽  
Andrew Gregory
Keyword(s):  
Single Crystal ◽  
Silica Glass ◽  
Broad Band ◽  
Peak Frequency ◽  
Vitreous Silica ◽  
Peak Height ◽  
Fused Silica ◽  
Boson Peak ◽  
Single Crystal Quartz ◽  
Crystal Quartz

Z-cut single-crystal quartz and vitreous silica (silica glass or fused silica) were evaluated for use as reference materials for terahertz and microwave measurements of complex permittivity, with Z-cut quartz confirmed as being suitable. Measurements of refractive indices and absorption coefficients for o-ray and e-ray in quartz and for vitreous silica are reported at frequencies between 0.2 and 6 THz and at 36 and 144 GHz, and compared with data reported in the literature. A previously unreported broad band was seen in the extraordinary absorption of quartz. The Boson peak in silica glass absorption was examined, and for the first time, two negative relationships have been observed: between the refractive index and the Boson peak frequency, and between the Boson peak height and its frequency.

scholarly journals STUDY OF FILMS OF TRANSITION METALS AS MATERIALS FOR LASER NANOSTRUCTURING

2021 ◽  
Vol 8 ◽  
pp. 241-247
Author(s):  
Roman I. Kuts ◽  
Victor P. Korolkov ◽  
Vladimir N. Khomutov ◽  
Anatoly I. Malyshev ◽  
Sergey L. Mikerin
Keyword(s):  
Thin Films ◽  
Transition Metals ◽  
Fused Silica ◽  
Point Of View ◽  
Direct Laser Writing ◽  
Periodic Nanostructures ◽  
Laser Writing ◽  
Oxide Nanostructures ◽  
Direct Laser ◽  
Silica Substrates

This paper presents the results of a study of direct laser writing on thin films of transition metals (Hf, Ti, Zr, Ta, V). The films were deposited on fused silica substrates. A comparison of laser writing on the indicated films is carried out from the point of view of the presence of contour writing. As it was proved earlier, when writing on zirconium films, contour writing leads to formation of periodic nanostructures with a period equal to the writing step (250-500 nm). Materials were identified that are promising from the point of view of writing oxide nanostructures for the further formation of the diffraction phase microrelief of DOEs.

Research on the Fabrication of Micro Channels in Fused Silica Substrates by Laser-Induced Plasma

2013 ◽  
Vol 50 (11) ◽  
pp. 111403
Author(s):  
李世雄 Li Shixiong ◽  
白忠臣 Bai Zhongchen ◽  
陈德良 Chen Deliang ◽  
秦水介 Qin Shuijie
Keyword(s):  
Fused Silica ◽  
Laser Induced Plasma ◽  
Micro Channels ◽  
Silica Substrates

Weldability and mechanical properties of IC10 single crystal and GH3039 superalloy dissimilar laser beam welding joint

2020 ◽  
Vol 791 ◽  
pp. 139797
Author(s):  
Wenhua Dai ◽  
Sun Wenjun ◽  
Jijun Xin ◽  
Shanlin Wang ◽  
Chao Fang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Laser Beam ◽  
Single Crystal ◽  
Laser Beam Welding ◽  
Welding Joint

Filamentation of an annular laser beam with a vortex phase dislocation in fused silica

2016 ◽  
Vol 46 (11) ◽  
pp. 1002-1008 ◽  
Author(s):  
E V Vasil'ev ◽  
S A Shlenov
Keyword(s):  
Laser Beam ◽  
Fused Silica ◽  
Vortex Phase ◽  
Annular Laser

Weld metal cracking in laser beam welded single crystal nickel base superalloys

2009 ◽  
Vol 25 (1) ◽  
pp. 68-75 ◽  
Author(s):  
Y. L. Wang ◽  
O. A. Ojo ◽  
R. G. Ding ◽  
M. C. Chaturvedi
Keyword(s):  
Laser Beam ◽  
Weld Metal ◽  
Single Crystal ◽  
Nickel Base Superalloys ◽  
Nickel Base

Contamination of TiO2 thin films spin coated on rutile and fused silica substrates

2018 ◽  
Vol 354 ◽  
pp. 369-382 ◽  
Author(s):  
I.I. Kabir ◽  
L.R. Sheppard ◽  
R. Liu ◽  
Y. Yao ◽  
Q. Zhu ◽  
...  
Keyword(s):  
Thin Films ◽  
Fused Silica ◽  
Tio2 Thin Films ◽  
Silica Substrates
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