====== Incoupling breadboard ======
[[:groups:Mg:Project PTB-Cavity:Incoupling breadboard-Board:2D-drafts|2D Drafts of the mounts]] \\
Alle Dokumente befinden sich im AFS unter: \\AFS\.iqo.uni-hannover\projects\magnesium\Projekte\PTB Ultrastable laser\PTB Files\Breadboard \\
Breadboard: M4-Löcher im Abstand von 15 mm \\
Strahlhöhe: 29 mm (zu Beginn), 57 mm (zwischen Fahrstuhl und Einkoppelspiegel), 43 mm (vor PDH-diode)\\
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Anforderungen:
  * jedes Element verschiebbar, sodass keine Reflexe zurück ins System reflektiert werden
  * Mode Matching Linse auf einer Linear Stage, damit der Fokus direkt auf den ersten Spiegel fokussiert werden kann
  * zwei Blenden zur Justierung des Laserstrahls
  * jeder Halter individuell angepasst auf das Breadboard 
  * Isolatorhalter: speziell mit Dreipunktlagerung
  * Halter: zur Dreipunktlagerung auf Unter
  * Winkel bei den Spiegeln wurden nicht größer als im Datenblatt vorgeschrieben gewählt


===== Version 5 =====
  * two Waveplates can be mounted, so that the polarisation can be adjusted direktly in front of the cavity
  * "light-elevator"
  * the right PDs were used (PTB)
{{:groups:mg:project_ptb-cavity:v5_-_oben.png?400|}}
{{:groups:mg:project_ptb-cavity:v5_-_vorne.png?400|}}
{{:groups:mg:project_ptb-cavity:v5_-_rechts.png?400|}}
{{:groups:mg:project_ptb-cavity:v5_-_links.png?400|}}
{{:groups:mg:project_ptb-cavity:v5_-_hinten.png?400|}}

===== Version 4 =====
  * sending light upwards is not good, "elevator" is better
  * PDH-diode and RAM-diode: good, that there is the possibility to place isolators in front of them if they are needed
  * Breadboard bigger for more space
  * Vakuum-ground can be connected to vakuum-top by the breadboard
{{:groups:mg:project_ptb-cavity:v4_-_oben.png?400|}}
{{:groups:mg:project_ptb-cavity:v4_-_vorne.png?400|}}
{{:groups:mg:project_ptb-cavity:v4_-_rechts.png?400|}}
{{:groups:mg:project_ptb-cavity:v4_-_links.png?400|}}
{{:groups:mg:project_ptb-cavity:v4_-_hinten.png?400|}}

===== Version 3 =====
  * RAM-diode: no mirror in front of it for adjusting the laser beam
  * 
{{:groups:mg:project_ptb-cavity:v3_-_oben.png?400|}}
{{:groups:mg:project_ptb-cavity:v3_-_vorne.png?400|}}
{{:groups:mg:project_ptb-cavity:v3_-_rechts.png?400|}}
{{:groups:mg:project_ptb-cavity:v3_-_links.png?400|}}
{{:groups:mg:project_ptb-cavity:v3_-_hinten.png?400|}}

===== Version 2 =====
{{:groups:mg:project_ptb-cavity:v2.2_-_oben.png?400|}}
{{:groups:mg:project_ptb-cavity:v2.2_-_vorne.png?400|}}
{{:groups:mg:project_ptb-cavity:v2.2_-_rechts.png?400|}}
{{:groups:mg:project_ptb-cavity:v2.2_-_links.png?400|}}
{{:groups:mg:project_ptb-cavity:v2.2_-_hinten.png?400|}}

===== Version 1 =====
  * optical components were missing (cubes for adjusting the light)
  * PDH-diode and RAM-diode shouldn't be positioned after the same cube, so that they don't influence each other. So te RAM-diode was positioned direktly before the isolator
{{:groups:mg:project_ptb-cavity:v1_-_oben.png?400|}}
{{:groups:mg:project_ptb-cavity:v1_-_vorne.png?400|}}
{{:groups:mg:project_ptb-cavity:v1_-_rechts.png?400|}}
{{:groups:mg:project_ptb-cavity:v1_-_links.png?400|}}
{{:groups:mg:project_ptb-cavity:v1_-_hinten.png?400|}}