A comparative study and optimal choice of the method of determination of interstitial oxygen-in-silicon concentration from optical transmission spectra

2003 ◽  
Author(s):  
Yu. R. Vinetski ◽  
V. I. Famitski ◽  
A. G. Titov ◽  
P. E. Khakuashev
Keyword(s):  
Comparative Study ◽  
Optical Transmission ◽  
Optimal Choice ◽  
Silicon Concentration ◽  
Interstitial Oxygen ◽  
Transmission Spectra ◽  
Method Of Determination ◽  
Optical Transmission Spectra

The Influence of the Vitreous Matrix for the Determination of the Lanthanides Doping Concentration from the Optical Transmission Spectra

2008 ◽  
Vol 39-40 ◽  
pp. 269-272
Author(s):  
H. Niciu ◽  
Dorel Radu ◽  
C. Onose ◽  
V. Maduta ◽  
Daniela Niciu ◽  
...  
Keyword(s):  
Optical Transmission ◽  
Phosphate Glasses ◽  
Transmission Spectra ◽  
Oh Groups ◽  
Transitional Metals ◽  
Rare Earth Spectra ◽  
Optical Transmission Spectra ◽  
Optical Applications ◽  
Nonlinear Optical Applications

In contrast with transitional metals whose spectra and color depends a lot of the ligands strength field, the sensitivity of the rare earth spectra is significantly weaker. This is the reason why the color of these ions is the same whatever the basic vitreous matrix. These properties permit to establish a relation for the determination of the concentration of these ions in vitreous matrix directly from the optical transmission spectra. The paper presents some samples of silica and phosphate glasses with lanthanides content for nonlinear optical applications synthesized at a laboratory scale. VIS-NIR transmission curves are presented, for several compositions. For the correlation of the lanthanides content with the specific optical absorption peak one used a method starting from the Lambert – Beer law. For the Nd2O3 concentration determination, it was used a method proposed by D.M. Dood and D.B. Fraser for the OH groups content, with an error of +4%. For specific peaks, expressions for lanthanides concentration in ppm, related to the optical transmission were found. A possibility appears to directly find the lanthanides concentration from the absorption coefficient at specific wavelengths for each vitreous matrix. The influence of matrix is discussed.

Depth of glass poling - via optical transmission spectra

Optik ◽  
2021 ◽  
pp. 167600
Author(s):  
Ekaterina Babich ◽  
Dmitrii Raskhodchikov ◽  
Ekaterina Lubyankina ◽  
Andrey Lipovskii
Keyword(s):  
Optical Transmission ◽  
Transmission Spectra ◽  
Optical Transmission Spectra

Structure and optical transmission spectra of ZnS–SiO2 nanocomposite films deposited at low temperatures

2015 ◽  
Vol 49 (10) ◽  
pp. 1327-1331 ◽  
Author(s):  
P. N. Krylov ◽  
R. M. Zakirova ◽  
I. A. Knyazev ◽  
N. V. Kostenkov ◽  
E. A. Romanov ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Optical Transmission ◽  
Nanocomposite Films ◽  
Transmission Spectra ◽  
Optical Transmission Spectra

Are the Temperature Sensors Based on Chalcogenide Glass Possible?

2013 ◽  
Vol 200 ◽  
pp. 316-320
Author(s):  
Mykhaylo Shpotyuk ◽  
Dmytro Chalyy ◽  
Oleh Shpotyuk ◽  
Mihail Iovu ◽  
Andrzej Kozdras ◽  
...  
Keyword(s):  
Chalcogenide Glasses ◽  
Optical Transmission ◽  
Optical Band Gap ◽  
Temperature Sensors ◽  
Sensitivity Index ◽  
Transmission Spectra ◽  
Scanning Calorimetry ◽  
Linear Character ◽  
Optical Transmission Spectra ◽  
Principal Possibility

Principal possibility of the using of chalcogenide glasses (on the example of Ge18As18Se64) as active media for temperature sensors is considered in this work. Differential scanning calorimetry testing of the investigated glasses shown that 2 years of natural storage does not lead to the drift of their DSC-parameters (glass transition temperature and endothermic peak area). Investigation of the temperature dependence of optical transmission spectra shows the linear character of optical band-gap changes with a temperature. Temperature sensitivity index β for Ge18As18Se64 is estimated to be equal to the ~1.2·10-3 eV/°C.

Facile synthesis of silica–titania core–shell microsphere and their optical transmission spectra

2013 ◽  
Vol 110 ◽  
pp. 260-263 ◽  
Author(s):  
Huihua Huang ◽  
Aihua Sun ◽  
Jianfei Zhang ◽  
Biao Wang ◽  
Chengyi Chu ◽  
...  
Keyword(s):  
Optical Transmission ◽  
Core Shell ◽  
Transmission Spectra ◽  
Facile Synthesis ◽  
Optical Transmission Spectra

Spin polarized conduction and valence band states in GdN

MRS Advances ◽  
2017 ◽  
Vol 2 (3) ◽  
pp. 153-158 ◽  
Author(s):  
Muhammad Azeem
Keyword(s):  
Valence Band ◽  
Optical Transmission ◽  
Energy Gap ◽  
Ferromagnetic State ◽  
Spin Splitting ◽  
Transmission Spectra ◽  
Temperature Dependent ◽  
Spin Polarized ◽  
Transmission Measurements ◽  
Optical Transmission Spectra

AbstractOptical transmission spectra are collected in the ferromagnetic state of GdN at various temperatures. The temperature dependent extinction coefficient extracted from the transmission measurements show that the conduction and valence band states are spin polarized. The results confirm the LSDA+U estimates of the energy gap associated with the majority/minority-spins and also the magnitude of the spin splitting.

Sign in / Sign up

Export Citation Format

Share Document