FSM-300 or FSM-320 Fast Steering Mirror & FSM-CD300B ...
FSM-300 or FSM-320 Fast Steering Mirror & FSM-CD300B ...
FSM-300 or FSM-320 Fast Steering Mirror & FSM-CD300B ...
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16 Unpacking the <strong>FSM</strong><br />
3.2 Standard Mirr<strong>or</strong> Options<br />
<strong>FSM</strong>-<strong>300</strong> <strong>FSM</strong>-<strong>320</strong><br />
Mirr<strong>or</strong> Substrate Material Pyrex Fused Silica<br />
Mirr<strong>or</strong> Retaining Mechanism Mirr<strong>or</strong> bonded to aluminum<br />
carrier (user replaceable).<br />
Mirr<strong>or</strong> Pivot Point (centered on Gimbaled 12.19 mm behind<br />
mirr<strong>or</strong>)<br />
mirr<strong>or</strong> surface<br />
Mirr<strong>or</strong> bonded to stainless steel<br />
carrier (replaceable).<br />
Gimbaled 9.15 mm behind mirr<strong>or</strong><br />
surface<br />
Mirr<strong>or</strong> Diameter 25.4 mm 50.8 mm<br />
Mirr<strong>or</strong> Thickness 6.0 mm 3.0 mm<br />
Mirr<strong>or</strong> Wedge ≤ 5 arc min ≤ 5 arc min<br />
Clear Aperture (3) at 0° angle of<br />
incidence<br />
≥ 20.3 mm ≥ 40.6 mm<br />
Clear Aperture (3) at 45° angle of<br />
incidence<br />
≥ 14.4 mm ≥ 28.8 mm<br />
Surface Flatness (3) (after coating ≤ λ/10 at 632.8 nm over clear ≤ λ/2 at 632.8 nm over clear<br />
and bonding)<br />
aperture<br />
aperture<br />
Surface Quality (3) Reflectivity, Standard<br />
Coatings<br />
15-5 scratch-dig 40-20 scratch-dig<br />
(3)<br />
ER.1 Coating: Enhanced<br />
Aluminum<br />
> 93%, 450-700 nm > 93%, 450-700 nm<br />
ER.4 Coating: Protected Gold > 96%, 650- 1700 nm; > 98%<br />
from 1.7-2.0 µm<br />
Please contact Newp<strong>or</strong>t.<br />
Additional coating options Please contact Newp<strong>or</strong>t. Please contact Newp<strong>or</strong>t.<br />
FOOTNOTES:<br />
1) Optical angular range is equal to twice the mechanical angular range.<br />
2) Measured under position output control. Optical closed-loop perf<strong>or</strong>mance is also determined by<br />
external feedback electronics.<br />
3) Optical parameters apply to central 80% of mirr<strong>or</strong> aperture.<br />
NOTES:<br />
4) Perf<strong>or</strong>mance data is based upon well-defined, smooth, D-A sine wave inputs. Alternate inputs<br />
(square waves, triangle waves, low resolution D-A sine waves) are addressed in section 6.3
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