1997
DOI: 10.1088/0022-3727/30/4/026
|View full text |Cite
|
Sign up to set email alerts
|

Refractive-index dispersion and the optical-absorption edge of wedge-shaped thin films of metal - chalcogenide glasses

Abstract: The optical constants and average thickness of metal - chalcogenide glass films of chemical composition , with x = 5, 10 and 15 at.%, are very accurately determined by a novel method, based only on the transmission spectra at normal incidence, measured over the 400 - 2200 nm spectral range. This useful optical method takes into consideration the non-uniform thickness of the thermally evaporated films (if not corrected, this may lead to too-large calculated values of the absorption coefficient, as well as serio… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

4
12
0
1

Year Published

2001
2001
2018
2018

Publication Types

Select...
6
4

Relationship

0
10

Authors

Journals

citations
Cited by 37 publications
(17 citation statements)
references
References 26 publications
4
12
0
1
Order By: Relevance
“…This effect is due to the change in bond angles and/or bond lengths. Our results are consistent with the previous work dealing with the decrease of the energy gap with composition [25]. It is also clear from Fig.…”
Section: Optical Propertiessupporting
confidence: 94%
“…This effect is due to the change in bond angles and/or bond lengths. Our results are consistent with the previous work dealing with the decrease of the energy gap with composition [25]. It is also clear from Fig.…”
Section: Optical Propertiessupporting
confidence: 94%
“…This confirms that the surface of the film does not have any roughness, because the existence of the interference pattern is very sensitive for the surface variations ͑in-cluding also the variations of the film thickness͒. 13,14 Resist A ͑Figs. 3 and 4͒, instead, does not show any evidence of the interference, indicating that the quality of the film surface at the prevailing environmental and physical conditions was not so good as in Resist B ͑the refractive indices of the resists are roughly the same͒.…”
Section: ͑3͒supporting
confidence: 61%
“…The optical constants n(λ) and k(λ) of our films have been determined using Swanepole technique (Swanepoel, 1984). Our earlier work (El-Bana & Fouad, 2017;El-Bana et al, 2016;Sharma, El-Bana, Fouad, & Sharma, 2016) and various other researchers (Márquez, González-Leal, Jiménez-Garay, Lukic, & Petrovic, 1997;Sharma, Sharda, Sharma, & Sharma, 2014) have used this technique to estimate the optical parameters for chalcogenide glasses. The determined values of n and k for all films were found to lie within the range of the experimental error ±2% for n and ±5% for k (Fouad et al, 2006).…”
Section: Methodsmentioning
confidence: 99%