Tech Briefs Magazine - November 2021 - PIT-10

Silicon Carbide Optics
for
High-Energy Applications
S
ilicon Carbide (SiC) optics are
becoming more and more prevalent
in high-energy laser (HEL)
designs, so it is important that
manufacturers are aware of the potential
risks when using these materials early in
the product development process, thereby
avoiding what could be costly and
time-consuming problems if discovered
too late. Exactly what is possible, and
what solutions (and traps) are out there?
First of all, it needs to be understood
that while price competitiveness is a factor,
when looking at SiC for HEL applications,
selecting the lowest bidder can
often prove more costly in the long run.
The chosen product development partner
needs to keep an eye on the price
for sure, but should also have a high
level of market intelligence, material
expertise, optics manufacturing
expertise, and be an adept engineering
consultant.
This is vital as SiC is not a standard
" buy, grind, and polish " material.
There are many nuances when
designing and manufacturing a
SiC optic, so the sooner customers access
expert feedback from an experienced
optical manufacturer, the lower the risk
to their programs. The chosen optics
partner should employ a multi-faceted
approach, ensuring that design, fabrication,
coding, and metrology issues are all
navigated successfully.
Why Choose Silicon Carbide?
SiC excels in HEL applications, spacebased
telescope applications,
and applications in
high acceleration
and
thermally
variable environments. This is
because it exhibits high specific stiffness
with a low coefficient of thermal expansion
(CTE), excellent thermal stability
(desirable so that heat absorption does
not affect the beam path), resonant frequency
advantages over materials like
Zerodur (a key attribute for HEL applications
undergoing acceleration), and
it can be formed into complex shapes.
10
Photonics & Imaging Technology, November 2021
Cov
ToC

http://info.hotims.com/79419-902

Tech Briefs Magazine - November 2021

Table of Contents for the Digital Edition of Tech Briefs Magazine - November 2021

Tech Briefs Magazine - November 2021 - Intro
Tech Briefs Magazine - November 2021 - Sponsor
Tech Briefs Magazine - November 2021 - Cov1
Tech Briefs Magazine - November 2021 - Cov2
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