Products & Services
NPL offers a number of calibration services, products and training courses in the optical frequency standards and metrology area.
Measurement services
We offer the following UKAS-accredited measurement services in this area:
- Auto-compensated laser interferometer system calibration
- Uncompensated laser interferometer system calibration
- Laser vacuum wavelength calibration
Equipment supply
The following products are available, either directly from NPL or manufactured by third parties under license from NPL:
- NPL iodine-stabilised HeNe reference lasers
- NPL beat frequency monitoring system
- NPL-Hexagon Metrology stabilised lasers
- NPL low drift etalon
Consultancy and collaboration
To discuss your measurement requirements in the area of optical frequency standards and metrology, or possible opportunities for collaboration, please contact Patrick Gill.
Training courses
We offer two training courses in this area:
Optical Frequency Standards & Metrology products & services
- NPL offers a routine service for the verification of interferometer system accuracy.
- Information about NPL's beat frequency monitoring systems, including hardware and software.
- Find out more about NPL's iodine-stabilised HeNe reference lasers.
- The NPL low drift Fabry-Perot etalon has been designed to provide the best possible frequency stability.
- NPL has many years of experience with laser stabilisation as part of its programme of research into optical frequency (wavelength) standards for use in interferometry.
- Information about NPL's Optical Frequency metrology and standards training services.

