Volume & Issue no: Volume 5, Issue 2, March - April 2016
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Title: |
ULTRA-NARROW BANDPASS INTERFERENCE FILTER FOR INFRARED APPLICATION
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Author Name: |
Jamal F. Mohammad, Faisal H. Antar, Shireen M. Abed |
Abstract: |
ABSTRACT
In this work, a theoretical designs of ultra-narrow
bandpassfilter to operate in the infrared region ( i. e. for laser
CO2 ) is proposed, in order to detect spectral lines with full
width at half maximum (FWHM) is less than 2 nm. This
filter is constructed by coat substrate by two transparent
coating material with high and low refractive index. The
effect of incidence angle of the electromagnetic on the filter
also studied. The results shows that, for normal incidence,
high transmittance ( T ˃ 98 % ) at the center of design
wavelength(λo) with very lowtransmittance in the rejection
region. As the angle of incidence increase, the transmittance
decreases as a result of varying in thickness of the layers.
Keywords:Band-pass filters, Multilayer Optical Coating,
Fabry-Perot Interference Filter. |
Cite this article: |
Jamal F. Mohammad, Faisal H. Antar, Shireen M. Abed , "
ULTRA-NARROW BANDPASS INTERFERENCE FILTER FOR INFRARED APPLICATION
" , International Journal of Emerging Trends & Technology in Computer Science (IJETTCS) ,
Volume 5, Issue 2, March - April 2016 , pp.
129-132 , ISSN 2278-6856.
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