What is it about?
We have made a system that could compare a cheap diode laser with a very stable reference laser and measure the wavelength difference between them. It can be used also as a very precise frequency meter for electronic signals or oscillators with applications in communications or instrumentation.
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Photo by Daniele Levis Pelusi on Unsplash
Why is it important?
Our system is part of an optic measurement system with interferometers and diode lasers that can be used in the industry for the callibration of equipments. It would be more affordable than existing systems.
Perspectives
This work has been a meeting point between vocational training, university and industry. Part of the development has been made by vocational training students and teachers and has been a valuable experience for them.
Javier Diz
Universidade de Vigo
Read the Original
This page is a summary of: New electronic implementation of the timestamps method intended for high resolution comparison of laser wavelengths, Review of Scientific Instruments, September 2023, American Institute of Physics,
DOI: 10.1063/5.0127075.
You can read the full text:
Resources
Design of a New Microcontroller-Based Vernier Fringe Counter for Interferometric Measurement of Laser Wavelength
Another wavemeter based in the Vernier method
Design of an interferometric system for gauge block calibration
Article that describes a complete system for the callibration of gauge blocks
Nuevos sistemas electrónicos de comparación de frecuencias mediante interferómetro Michelson para la estabilización de diodos láser
Doctoral dissertation about electronic methods of frequency comparison
Interferometric comparison of laser wavelengths: Learning applications of an innovation project in vocational training
Applications in education of a research project
Contributors
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