Instructions for DIY Interferometer Displacement Measuring System Kits

Version 1.04 (17-Oct-21)

Sam's Laser FAQ, Copyright © 1994-2019
Samuel M. Goldwasser
--- All Rights Reserved ---

For contact info, please see the
Sci.Electronics.Repair FAQ Email Links Page.


Introduction

UNDER CONSTRUCTION

This document contains guidelines and links to other manuals for the construction of a homodyne or heterodyne interferometer displacement measuring system based on a bare HeNe laser tube and a measurement readout based on a microcontroller. There are kits providing various levels of performance from really basic to something similar to a commercial system.

Since the lasers and measurement readouts are also available as separate kits, links will be provided to their detailed manuals. Only information not available elsewhere will be elaborated on in this document.

The heterodyne and homodyne kits consist of 4 parts:

These parts of the system can be constructed and tested separately.

For a general introduction to this technology, see LIPM: An Inexpensive Laser Interferometer-Based Precision Measurement System.

There are several variations on this kit:


Sam's Laser FAQ, Copyright © 1994-2013, Samuel M. Goldwasser, All Rights Reserved.
I may be contacted via the
Sci.Electronics.Repair FAQ Email Links Page.