Lasers are widely used across the classical and quantum landscape in fibre communications, atomic clocks, photonic quantum computing and sensing systems for gases or light detection and ranging (LIDAR).
In many applications, knowledge of the laser linewidth is key to understanding whether a specific laser is suitable. The National Physical Laboratory (NPL) offers a laser linewidth measurement consultancy, where we can recommend methods to evaluate laser linewidths from ~100 MHz to sub-Hz widths for laser wavelengths between 350 nm and 2 microns.
There are many different methods of measuring the linewidth of a laser and NPL can provide guidance on how to achieve the best linewidth measurement results either from a setup which is already established at your facility or recommend a measurement technique for a given laser and budget. The consultancy will take the form of a series of video calls with our experts as well as follow-up email correspondence.
The NPL laser linewidth consultancy can also include advice on:
- Laser characterisation, e.g. power-current-voltage (LIV) measurements
- Laser frequency noise
- Laser frequency stability
Our expertise is available for laser manufacturers or end users who need to perform laser linewidth and frequency stability measurements.
Find out more about our work in Quantum Time and Frequency
Are you interested in learning more about our quantum capabilities?
Contact a member of NPL's quantum team today to schedule a consultation. We can discuss your specific needs and how our quantum technologies can help you achieve your goals.
Speak to our quantum team