Tech Briefs Magazine - September 2024 - PIT-13
equipment. Controlling the bandwidth
of the laser and attenuating out-ofband
light is key in these applications
and, consequently, ultra-narrows are
quickly becoming a critical component.
Figure 5 showcases Alluxa's capabilities
to design and reliably manufacture
a 10.6 micron with FWHM < 0.1
micron in the LWIR region.
The wide breadth of ever-progressing
applications in need of ultra-narrow
bandpass filters creates the demand for
constant innovation and improvement.
From minimizing loss or scatter in the
UV, to greater repeatability and theory
matching in the VIS and NIR, to increased
in-band transmission in conjunction
with narrower bandwidths in the
LWIR, the call for innovation continues
to be met by Alluxa. The SIRRUS™
deposition platform, along with Alluxa's
design and engineering expertise, has
fundamentally contributed to the capability
and advancement within a relatively
short period of time as is demonstrated
by these boundary pushing UNBPs.
UV Ultra Narrow Solar Filter
FWHM: 0.28nm
20
18
16
14
12
10
8
6
4
2
278
278.5
279
279.5
Wavelength (nm)
Figure 2. UV Ultra-Narrow Solar Filter. (Image: Alluxa)
280
Measurement
Theory
280.5
281
100
90
80
70
60
50
40
30
20
10
531
531.2
531.4
531.6
531.8
532
532.2
Wavelength (nm)
532.4
532.6
References
1 SVS. " NASA Scientific Visualization Studio | a Slice
of Light: How IRIS Observes the Sun. " SVS, 26
June 2015, svs.gsfc.nasa.gov/4318/.
2 " EUVST - NASA Science. " NASA, NASA, science.
nasa.gov/mission/euvst/.
3 " Cloud-Aerosol Transport System (CATS). " Cats.
gsfc.nasa.gov.
4 " NASA AOS - the ALICAT Lidar for the AOS-Inclined
Orbit: Instrument Overview and Projected
Performance. " Aos.gsfc.nasa.gov, aos.gsfc.nasa.
gov/meetings-documents-more.htm?id=175.
This article was written by the Alluxa
(Santa Rosa, CA) Engineering Team. For
more information, visit www.alluxa.com.
Vis Ultra Narrow Bandpass Filter
FWHM: 0.127
Measurement
Theory
532.8
533
Figure 3. VIS Ultra-Narrow Bandpass Filter, CWL @ 532 nm. (Image: Alluxa)
NIR Ultra Narrow Bandpass Filter
FWHM: 0.25 nm
LWIR Ultra Narrow Bandpass Filter
FWHM: 100 nm
100
90
80
70
60
50
40
30
20
10
1063
1063.2
1063.4
1063.6
1063.8
1064
1064.2
Wavelength (nm)
1064.4
1064.6
Part 1
Part 2
Part 3
Part 4
Theory
1064.8
1065
100
90
80
70
60
50
40
30
20
10
10000
10200
10400
10600
Wavelength (nm)
Figure 4. NIR Ultra-Narrow Bandpass Filter, CWL @ 1064 nm. (Image: Alluxa)
Photonics & Imaging Technology, September 2024
Figure 5. 10.6 micron LWIR Ultra-Narrow Bandpass. (Image: Alluxa)
13
10800
11000
Part 1
Part 2
Part 3
Part 4
Part 5
Theory
11200
%T
%T
%T
%T
http://svs.gsfc.nasa.gov/4318/
http://science.nasa.gov/mission/euvst/
http://gsfc.nasa.gov
http://Aos.gsfc.nasa.gov
http://aos.gsfc.nasa.gov/meetings-documents-more.htm?id=175
http://aos.gsfc.nasa.gov/meetings-documents-more.htm?id=175
http://www.alluxa.com
Tech Briefs Magazine - September 2024
Table of Contents for the Digital Edition of Tech Briefs Magazine - September 2024
Tech Briefs Magazine - September 2024 - Intro
Tech Briefs Magazine - September 2024 - Sponsor
Tech Briefs Magazine - September 2024 - Cov1
Tech Briefs Magazine - September 2024 - Cov2
Tech Briefs Magazine - September 2024 - 1
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Tech Briefs Magazine - September 2024 - 16A
Tech Briefs Magazine - September 2024 - 16B
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Tech Briefs Magazine - September 2024 - Cov3
Tech Briefs Magazine - September 2024 - Cov4
Tech Briefs Magazine - September 2024 - PIT-Cov1
Tech Briefs Magazine - September 2024 - PIT-Cov2
Tech Briefs Magazine - September 2024 - PIT-1
Tech Briefs Magazine - September 2024 - PIT-2
Tech Briefs Magazine - September 2024 - PIT-3
Tech Briefs Magazine - September 2024 - PIT-4
Tech Briefs Magazine - September 2024 - PIT-5
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Tech Briefs Magazine - September 2024 - PIT-Cov4
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