Fast Steering Mirrors (FSM)
ATA develops
custom high performance Fast Steering Mirrors that enable real-time
corrections in adaptive optics for directed energy systems, long range
laser communications, and telescopes. The products shown are examples of
FSMs which ATA has built. These mirrors are used in applications ranging
from laboratory-based systems to airborne line of sight stabilization
systems. ATA has experience with space qualifying components and is
working towards developing a space-qualified fast steering mirror. ATA
FSMs can be designed to use metal (aluminum or beryllium), glass, silicon,
or silicon carbide substrates depending on the specific requirements. ATA
has built mirrors that range from 1 inch aluminum mirrors with >7000
radians/sec2 acceleration capability to 12 inch, silicon
carbide, reactionless mirrors with a 1kHz bandwidth and >300 rad/s2
acceleration capability. ATA can provide mirrors with virtually any
coating requirement from generic protected silver coatings to high
reflectivity dielectric coatings designed for HEL applications.
What makes ATA
steering mirrors exceed the performance of fast steering mirrors from
other companies? ATA has a long history in designing and fabricating
sensors, actuators, flexures, and control systems. ATA has produced very
high efficiency actuators, including space qualified, redundant winding
actuators. ATA has produced non-contact linear displacement sensors
capable of sub-nanometer resolution over 1mm or larger travel. ATA
manufactures the highest performance angular rate sensors with angular
motion measurement capabilities below 40 nanoradians between 1Hz and
1kHz.
Combine these capabilities with our 30 year history of excellence in
real-time controls and system development for precision sensing,
measurement and control and you have a range of steering mirrors that
simply beats the competition.
Please
contact us with your specific needs and we will be glad to provide more
information as well as cost/lead time estimates.
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 |
 |
 |
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|
1 inch FSM |
2 inch FSM |
7 inch FSM |
12 inch FSM |
|
Mirror Size |
1 x 1.4
elliptical |
2 circular |
7.25
circular |
12
circular |
|
Mechanism Size |
2 x 2 x
1 |
3 x 3.3 x
4 |
10 x 10 x
5 |
15 x 15 x
11.4 |
|
Mass |
0.7 lb (320
g) |
<2 lbs (900
g) |
15 lbs (6.8
kg) |
95 lbs (43
kg) |
|
Substrate Material |
Aluminum |
Silicon
Carbide |
Silicon
Carbide |
Silicon
Carbide |
|
Optical Properties |
λ/4 P-V
Single
Point Diamond Turned Aluminum |
λ/10 P-V
Flatness
Protected
Silver Coating |
λ/20 RMS
Flatness
High
reflectivity dielectric coating |
λ/30 RMS flatness @ ambient conditions
High reflectivity dielectric coating |
|
Angular Travel |
± 2 degrees |
± 1.5
degrees |
± 5 mrad |
± 1 mrad
Capable of
± 8mrad |
|
Acceleration |
> 7000
radians/sec2 |
> 500
radians/sec2 |
> 160
radians/sec2 |
> 300
radians/sec2 |
|
Bandwidth |
> 1 kHz |
> 1 kHz
optical
200 Hz
position |
500 Hz
position |
800 Hz
optical
500 Hz
position |
|
Position Resolution |
--- |
< 1 ΅rad |
< 50 nrad |
< 150 nrad
50 Hz to 1
kHz |
|
Reactionless |
No |
No |
No |
Yes |
|
Controller Type |
Analog |
Analog |
Digital (FPGA) |
Digital (xPC) |
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