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groups:mg:project_ptb-cavity:vacuum:vacuum_optics [2017/01/19 09:26] – ssauergroups:mg:project_ptb-cavity:vacuum:vacuum_optics [2018/06/26 06:16] (current) – [Vacuum faraday rotator] ssauer
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-====== Vacuum optics ======+====== Optical components inside the vacuum ======
  
  
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       * Surface Quality: 20-10 Scratch-Dig       * Surface Quality: 20-10 Scratch-Dig
       * Reflectance Over AR Coating Range: R_avg < 0.5% @ 0° AOI       * Reflectance Over AR Coating Range: R_avg < 0.5% @ 0° AOI
 +      * Temperature:
 +          * Question: What is the maximum (continuous) temperature which the AR coatings are able to withstand? What is the maximum temperature gradient that can be applied (continuously) between the two faces of the 1/2“ 3mm BK7 and fused silica windows?
 +          * Response from Jeremy at Thorlabs: The maximum temperature will be around 200°C or so. We do not spec a maximum temperature gradient since it can depend on the thermal boundary conditions and geometrical boundary conditions of the window. However, I would recommend UVFS over N-BK7 because of its much lower coefficient of thermal coefficient. 
 +
 ^ Wavelength [nm]  ^ Reflectance [%] ^ ^ Wavelength [nm]  ^ Reflectance [%] ^
 |1580 | 0,13389 | |1580 | 0,13389 |
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       * Auto Cad (2D): {{ :groups:mg:project_ptb-cavity:vacuum:ww11050-c-autocadpdf.pdf |}}       * Auto Cad (2D): {{ :groups:mg:project_ptb-cavity:vacuum:ww11050-c-autocadpdf.pdf |}}
 +
  
  
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 ===== Vacuum isolator ===== ===== Vacuum isolator =====
   * Test report scan copy for vacuum compatible isolators: {{ :groups:mg:project_ptb-cavity:test_report_scan_copy_for_vacuum_compatible_isolators.pdf |}}   * Test report scan copy for vacuum compatible isolators: {{ :groups:mg:project_ptb-cavity:test_report_scan_copy_for_vacuum_compatible_isolators.pdf |}}
 +
 +===== Vacuum faraday rotator =====
 +  * Typ/Name: 102022 - FR-5-1550-SS
 +  * Serie: 2117
 +  * Wavelength: 1550nm
 +  * Aperature: 4.5mm
 +  * Transmisson: 98%
 +  * Rotation: 44.5° @ 1550nm
 +  * Test report scan copy for vacuum compatible faraday rotator: {{ :groups:mg:project_ptb-cavity:vacuum:faraday_rotator_instructions_fr-5-1550-ss_sn_1012_nortus_optronic_gmbh_2117_series.docx |Faraday rotator_Datasheet}}