|
Size: 831
Comment:
|
Size: 831
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 14: | Line 14: |
| ** Based on ETM and ITM RoC, assuming inf. thin optics. | ** Based on ETM and ITM ROC, assuming inf. thin optics. |
Coatings and Optics
This is a work in progress area for what optic and coatings we need.
Parameter |
ITMs |
ETMs |
PRM |
SRM |
FM (4x) |
HR Transmission 1064 nm |
0.014 * |
10 ppm |
0.03 +/-0.001 |
0.10 +/- 0.001 |
<0.01 |
HR Transmission 532 nm |
< 1000 ppm |
0.10 |
n/a |
n/a |
n.r. |
AR Reflection 1064 nm |
< 1000 ppm |
< 100 ppm |
< 1000 ppm |
< 1000 ppm |
<0.01 |
AR Reflection 532 nm |
<0.01 |
< 1000 ppm |
n/a |
n/a |
|
ROC |
Flat (>5 km) |
57.5 m? |
96.0 ** |
116.3** |
inf |
Wedge angle |
1 deg (+/- 0.2 deg) |
1 deg |
1 deg |
1 deg |
1 deg |
BRBR* T_ITMnom = 0.014 +/- 0.001. All 3 ITMs in the same coating run to match the T, i.e. T_ITMY - T_ITMX < 0.0003. Tolerance in T_ITMnom is larger. ** Based on ETM and ITM ROC, assuming inf. thin optics.