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| == Coatings and Optics == This is a work in progress area for what optic and coatings we need. |
## page was renamed from Upgrade 09/Optics <<TableOfContents(2)>> |
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| || 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? || || || inf || || Wedge angle || 1 deg (+/- 0.2 deg) || 1 deg ||1 deg||1 deg||1 deg|| |
------ = ►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 || |
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| [[BR]][[BR]]* ''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.'' | '''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 == [[attachment:26062ke2_HT532nms+p_HR1064nmp39-48°.pdf]] [[attachment:25062ke1_AR532nms+p+1064nmp39-48°.pdf]] [[attachment:25062ke1_AR532nms+p+1064nmp39-48°.pdf]] = ►Miscellaneous Optics (as of May 12, 2010) = [[Upgrade_09/Optics/RTmeasurement|Reflectivity and Transmissivity measurement for various mirrors with 523nm and 1064nm]] [[Optical_Layout]] {{attachment:40m_optics_list_upgrade_101214.png}} [[attachment:40m_optics_list_upgrade_101214.pdf]] [[attachment:40m_optics_list_upgrade_101214.xls]] |
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
►Miscellaneous Optics (as of May 12, 2010)
Reflectivity and Transmissivity measurement for various mirrors with 523nm and 1064nm
