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projects:optomech:start [2026/01/23 12:07] – rahixprojects:optomech:start [2026/04/14 08:20] (current) – rahix
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   * [[https://git.fa-fo.de/fafo/techtree/issues/86|Techtree Element #86 (Optomechanical System)]]   * [[https://git.fa-fo.de/fafo/techtree/issues/86|Techtree Element #86 (Optomechanical System)]]
 +  * 2026 EH23 talk: [[https://media.ccc.de/v/eh23-budget-beams-laser-experiments-in-a-hacker-lab|Budget Beams – Laser Experiments in a Hacker Lab]]
  
 More documentation to follow as the project progresses. In the mean time, find some lab notes of ongoing progress with optics at FAFO here: [[projects:optics:log|Lab Notes for Optics Experiments]] More documentation to follow as the project progresses. In the mean time, find some lab notes of ongoing progress with optics at FAFO here: [[projects:optics:log|Lab Notes for Optics Experiments]]
  
-{{projects:optomech:teaser.jpg?900|}}+{{projects:optics:interferometer-setup-basic_20260118_154518363.jpg?600}} 
 +{{projects:optomech:teaser.jpg?600|}}
  
-Assembly drawing for a kinematic mirror mount (will be released soon!):+Assembly drawing for a kinematic mirror mount (older version):
  
 {{:projects:optomech:kinematic-mount-release.png?900|}} {{:projects:optomech:kinematic-mount-release.png?900|}}
 +
 +==== Design ====
 +Some information about the design:
 +
 +  * Designed to stay compatible with commonly used (metric) optomechanical components.  We chose to use the same M6 25×25mm breadboards that are present in most optics labs.
 +
 +  * Using M3x0.5 adjusters for pitch and yaw correction as M3 screws are very cheap and readily available.  Commercial mounts use M6x0.25 adjusters so we have about half the finesse.
 +
 +  * The 3d-printed mounts are of course notably less stable.  We are going to characterize the mechanical performance to give a lower bound on what experiments can be done with them.
 +
 +  * We tried using integrated flexures to avoid needing metal springs.  Unfortunately, this does not work due to excessive creepage effects.