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Size: 3132
Comment:
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Size: 3138
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 97: | Line 97: |
| 1, material BK-7, grade A 2, diameter 1", 0.25" thick minimum 3, wedge 1 degree 4, surface quality 10-5 5, coat one side only 6, use same coating run as 6.5" windows ]] |
1. material BK-7, grade A 2. diameter 1", 0.25" thick minimum 3. wedge 1 degree 4. surface quality 10-5 5. coat one side only 6. use same coating run as 6.5" windows ]] |
Contents
►Folding mirrors
We use 2inch mirrors (d2" x t3/8") mirrors for the PRC/SRC folding mirrors.
Their name has been changed such that the definition agrees with the AdvLIGO naming. (12/01/2009)
Specs of the folding mirrors (as of Dec 16, 2009)
Name |
PR2 |
PR3 |
SR3 |
SR2 |
Size |
2"dia. X 3/8" thick |
2"dia. X 3/8" thick |
2"dia. X 3/8" thick |
2"dia. X 3/8" thick |
Incident angle |
2.5 deg |
36.5 deg |
44 deg |
6 deg |
HR Transmission 1064 nm |
500ppm |
< 100 ppm |
< 100ppm |
< 100ppm |
AR Reflection 1064 nm |
< 0.25% |
< 0.25% |
< 0.25% |
< 0.25% |
ROC |
Flat |
Flat |
Flat |
Flat |
Wedge angle |
1 deg |
1 deg |
1 deg |
1 deg |
Qty. |
2 |
2 |
2 |
2 |
R for 532nm to be considered!
At the installation in 2010, G&H HR mirrors were used for the TT mirrors. This results very little transmission through those mirrorrs (<25ppm).
2" Dichroic Recycling Cavity Mirrors from Laseroptik, measurement data of 06-29-2012
26062ke2_HT532nms+p_HR1064nmp39-48°.pdf
25062ke1_AR532nms+p+1064nmp39-48°.pdf
Gooch & Housego 2" & 1" mirrors 03/15/2010
►Miscellaneous Optics (as of May 12, 2010)
Reflectivity and Transmissivity measurement for various mirrors with 523nm and 1064nm
40m_optics_list_upgrade_101214.pdf
40m_optics_list_upgrade_101214.xls
6.5" Window Specs for Optical Table Enclosure, March 2013
- [[ WINDOW SPECS FOR OPTICAL TABLE COVER AT 40M
We changed some details, look carefully. Please quote us as shown below for 4 pieces of large windows and 5 pieces of 1" diameter mirrors
Window specs
I. Fabricate
- material BK-7, grade A
- diameter 6.5" + - 0.02",
- thickness 1" + - 0.02",
- wedge 2 degrees
- bevel both sides ~ 0.04"
- surface quality 10-5
- flatness 1/4 wave
- meet specs on central 5.5"
II. AR Coating
R < 0.2% at 532 and 1064 nm
- incident angles 0-10 degrees on both sides
- over the central 5" diameter
- coat witness plates as shown below
III, Verify
- verify the specs via measurement before shipping
- identify coating processes
IV, small mirrors (witness plates for 6.5" window coating run) 5 pieces
- material BK-7, grade A
- diameter 1", 0.25" thick minimum
- wedge 1 degree
- surface quality 10-5
- coat one side only
- use same coating run as 6.5" windows ]]