scholarly journals Photosensitive Yb-Doped Germanophosphosilicate Artificial Rayleigh Fibers as a Base of Random Lasers

Fibers ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 53
Author(s):  
Andrey Rybaltovsky ◽  
Sergei Popov ◽  
Denis Lipatov ◽  
Andrey Umnikov ◽  
Alexey Abramov ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Gas Phase ◽  
Spectral Properties ◽  
Single Frequency ◽  
Drawing Process ◽  
Deposition Technique ◽  
Optical Losses ◽  
Random Lasers ◽  
Gas Phase Deposition ◽  
Weak Fbg

Asingle-mode Yb-doped germanophosphosilicate fiber with ultra-low optical losses (less than 2 dB/km) was fabricated by means of the MCVD method utilizing an all-gas-phase deposition technique developed “in house”. The absorption and luminescent spectral properties of the fiber were thoroughly studied. The photosensitivity of the pristine (non-hydrogenated) fiber to 248 nm-laser radiation was confirmed by means of fiber Bragg grating (FBG) inscription directly during the drawing process. The random single-frequency lasing at the 1060-nm-wavelength obtained in the 21-m-long fiber with an array of weak FBG was reported. The developed laser slope efficiency in the backward-pumping scheme was measured as high as 32%.

Ultra-low-loss double-cladding laser fiber fabricated by optimized chelate gas phase deposition technique

2018 ◽  
Vol 57 (27) ◽  
pp. 7943 ◽  
Author(s):  
Shengfei She ◽  
Weinan Li ◽  
Chang Chang ◽  
Zhe Li ◽  
Jinkun Zheng ◽  
...  
Keyword(s):  
Gas Phase ◽  
Deposition Technique ◽  
Low Loss ◽  
Laser Fiber ◽  
Gas Phase Deposition

scholarly journals Optical Fiber Fabrication Using Novel Gas-Phase Deposition Technique

2011 ◽  
Vol 29 (6) ◽  
pp. 912-915 ◽  
Author(s):  
Alexander J. Boyland ◽  
Andrew S. Webb ◽  
Seongwoo Yoo ◽  
Francesca H. Mountfort ◽  
Mridu P. Kalita ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Gas Phase ◽  
Deposition Technique ◽  
Fiber Fabrication ◽  
Gas Phase Deposition

scholarly journals 462 kW excellent beam quality laser output with a low-loss Yb/Ce co-doped fiber fabricated by chelate gas phase deposition technique

2017 ◽  
Vol 7 (4) ◽  
pp. 1259 ◽  
Author(s):  
Jinkun Zheng ◽  
Wei Zhao ◽  
Baoyin Zhao ◽  
Chaoqi Hou ◽  
Zhe Li ◽  
...  
Keyword(s):  
Gas Phase ◽  
Beam Quality ◽  
Laser Output ◽  
Deposition Technique ◽  
Low Loss ◽  
Gas Phase Deposition ◽  
Co Doped

Rare-Earth Doped Optical Fiber Fabrication Using Novel Gas Phase Deposition Technique

2010 ◽  
Author(s):  
Alexander J. Boyland ◽  
Andrew S. Webb ◽  
Mridu P. Kalita ◽  
Seongwoo Yoo ◽  
Christophe A. Codemard ◽  
...  
Keyword(s):  
Rare Earth ◽  
Optical Fiber ◽  
Gas Phase ◽  
Deposition Technique ◽  
Fiber Fabrication ◽  
Gas Phase Deposition ◽  
Rare Earth Doped

scholarly journals Ytterbium-doped double-cladding fiber with 35 kW output power, fabricated by chelate gas phase deposition technique

2016 ◽  
Vol 6 (4) ◽  
pp. 979 ◽  
Author(s):  
Chaoqi Hou ◽  
Yonggang Zhu ◽  
Jinkun Zheng ◽  
Gang Li ◽  
Chao Li ◽  
...  
Keyword(s):  
Gas Phase ◽  
Output Power ◽  
Deposition Technique ◽  
Gas Phase Deposition

scholarly journals KW-level low photodarkening Yb/Ce codoped aluminosilicate fiber fabricated by the chelate gas phase deposition technique

2016 ◽  
Vol 6 (11) ◽  
pp. 3558 ◽  
Author(s):  
Lihua Zhang ◽  
Gang Li ◽  
Weinan Li ◽  
Qi Gao ◽  
Zhe Li ◽  
...  
Keyword(s):  
Gas Phase ◽  
Deposition Technique ◽  
Gas Phase Deposition

scholarly journals Spectral properties of coumarin derivatives in various environments

2013 ◽  
Vol 11 (4) ◽  
pp. 492-501 ◽  
Author(s):  
Alzbeta Holubekova ◽  
Pavel Mach ◽  
Jan Urban
Keyword(s):  
Gas Phase ◽  
Absorption Spectra ◽  
Spectral Properties ◽  
Density Functional ◽  
Water Solution ◽  
Blue Shift ◽  
Coumarin Derivatives ◽  
Complex Environments ◽  
Td Dft ◽  
Solvent Environment

AbstractThe structural and spectral properties of coumarin derivatives in complex environments were investigated within the time-dependent density functional theory (TD DFT). Absorption spectra calculations were obtained at TD PBE0/6-31+G(d,p) level of theory for coumarin47 in the gas-phase and in various polar and non-polar organic solvents. The geometries of coumarins 6, 30, 47 and 522 in the gas phase and in inclusion complexes with the β-cyclodextrin (βCD) were determined by PM3 and DFT (HCTH/6-31G) calculations. Encapsulation of coumarin in βCD and associated changes in electronic structure produced either a red or blue shift in the absorption spectra of coumarins. A proposed cavity model for βCD-coumarin complex in water solution allowed identification of various contributions to the overall shift in the absorption spectra of coumarin upon complex formation in a solvent environment

scholarly journals Фотоэлектрические свойства нитевидных кристаллов ZnO

2018 ◽  
Vol 52 (7) ◽  
pp. 741
Author(s):  
П.С. Шкумбатюк
Keyword(s):  
Laser Radiation ◽  
Gas Phase ◽  
Barrier Structure ◽  
Continuous Action ◽  
Potential Barriers ◽  
Photoelectric Properties

AbstractThe photoelectric properties of ZnO whiskers obtained from the gas phase by the evaporation of a powder and metallic Zn under the continuous action of CO_2 laser radiation are studied. On the basis of investigation of the InO–ZnO barrier structure, the mechanism of the photoconductivity of crystal ZnO caused by potential barriers is proposed.

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