Details
| Original language | English |
|---|---|
| Title of host publication | Advances in Optical Thin Films II |
| Subtitle of host publication | 13 - 15 September 2005, Jena, Germany |
| Place of Publication | Bellingham |
| Publisher | SPIE |
| ISBN (print) | 0-8194-5981-X |
| Publication status | Published - 5 Oct 2005 |
| Externally published | Yes |
| Event | Advances in Optical Thin Films II - Jena, Germany Duration: 13 Sept 2005 → 15 Sept 2005 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Publisher | SPIE |
| Volume | 5963 |
| ISSN (Print) | 0277-786X |
Abstract
Rugate structures, as well as gradient refractive index films in general, attract a lot of interest. The gradient index systems may provide advantages in both, optical performance and mechanical properties of the optical coatings. Rugates have shown to be especially interesting for design of notch filters. A lot of theoretical work on design of rugate filters has been done in the last decades. However, only few of the designs could be deposited, which is often caused by practical problems, e.g. preparing materials with the desired refractive index values. In this paper two different gradient refractive index designs are compared to a classical high-low stack. One gradient design is synthesized by an apodized sinusoidal structure that is approximated by homogeneous sublayers. The other one is based on an apodized sinusoidal structure as well, but it is approximated by a hybrid structure, i.e. a combination of linear gradient index ramps between the lowest and the highest refractive index applicable and homogeneous layers of high index values. The two gradient designs take into account the constraints posed by limitations of the real deposition systems. Both designs are compared to a classical high-low stack and the advantages and drawbacks of each approach are commented.
Keywords
- Band stop filters, Gradient index, Mixing layers, Notch, Rugate filters, Thin film design
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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Advances in Optical Thin Films II: 13 - 15 September 2005, Jena, Germany. Bellingham: SPIE, 2005. (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 5963).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Comparison of gradient index and classical designs of a narrow band notch filter
AU - Janicki, Vesna
AU - Lappschies, Marc
AU - Görtz, Björn
AU - Ristau, Detlev
AU - Schallenberg, Uwe
AU - Stenzel, Olaf
AU - Kaiser, Norbert
PY - 2005/10/5
Y1 - 2005/10/5
N2 - Rugate structures, as well as gradient refractive index films in general, attract a lot of interest. The gradient index systems may provide advantages in both, optical performance and mechanical properties of the optical coatings. Rugates have shown to be especially interesting for design of notch filters. A lot of theoretical work on design of rugate filters has been done in the last decades. However, only few of the designs could be deposited, which is often caused by practical problems, e.g. preparing materials with the desired refractive index values. In this paper two different gradient refractive index designs are compared to a classical high-low stack. One gradient design is synthesized by an apodized sinusoidal structure that is approximated by homogeneous sublayers. The other one is based on an apodized sinusoidal structure as well, but it is approximated by a hybrid structure, i.e. a combination of linear gradient index ramps between the lowest and the highest refractive index applicable and homogeneous layers of high index values. The two gradient designs take into account the constraints posed by limitations of the real deposition systems. Both designs are compared to a classical high-low stack and the advantages and drawbacks of each approach are commented.
AB - Rugate structures, as well as gradient refractive index films in general, attract a lot of interest. The gradient index systems may provide advantages in both, optical performance and mechanical properties of the optical coatings. Rugates have shown to be especially interesting for design of notch filters. A lot of theoretical work on design of rugate filters has been done in the last decades. However, only few of the designs could be deposited, which is often caused by practical problems, e.g. preparing materials with the desired refractive index values. In this paper two different gradient refractive index designs are compared to a classical high-low stack. One gradient design is synthesized by an apodized sinusoidal structure that is approximated by homogeneous sublayers. The other one is based on an apodized sinusoidal structure as well, but it is approximated by a hybrid structure, i.e. a combination of linear gradient index ramps between the lowest and the highest refractive index applicable and homogeneous layers of high index values. The two gradient designs take into account the constraints posed by limitations of the real deposition systems. Both designs are compared to a classical high-low stack and the advantages and drawbacks of each approach are commented.
KW - Band stop filters
KW - Gradient index
KW - Mixing layers
KW - Notch
KW - Rugate filters
KW - Thin film design
UR - http://www.scopus.com/inward/record.url?scp=33144470035&partnerID=8YFLogxK
U2 - 10.1117/12.624640
DO - 10.1117/12.624640
M3 - Conference contribution
AN - SCOPUS:33144470035
SN - 0-8194-5981-X
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Advances in Optical Thin Films II
PB - SPIE
CY - Bellingham
T2 - Advances in Optical Thin Films II
Y2 - 13 September 2005 through 15 September 2005
ER -