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projects:optomech:start [2026/01/18 20:31] – removed - external edit (Unknown date) 127.0.0.1projects:optomech:start [2026/04/14 08:20] (current) – rahix
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 +==== 3D-printed System of Optomechanical Components (Working Title) ====
 +For our own needs of [[projects:optics:start|laser optics experiments]] (right now, mainly interferometry), we are developing a system of 3d-printable optomechanical components.
  
 +  * [[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]]
 +
 +{{projects:optics:interferometer-setup-basic_20260118_154518363.jpg?600}}
 +{{projects:optomech:teaser.jpg?600|}}
 +
 +Assembly drawing for a kinematic mirror mount (older version):
 +
 +{{: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.