How does laser power meter calibration work?
Thursday, February 13, 2020
Accuracy of the readings from a laser power meter is everything for laser system manufacturers and laser engineers. Providing them highly reliable power meters with the least uncertainty which can be trusted, is an art requiring several important calibration steps.
The calibration process is verifying the accuracy of a measurement by comparing it to a reference standard and instruments measuring a quantity require such process to minimize the measurement uncertainty.
What you read from the produce scale at a grocery store, the speedometer of your car, thermometer at your home and measurement from thousands of instruments around us should provide the accuracy necessary for the application to enable consumers and businesses to have confidence in the products.
Like most of the devices, laser power detectors also require a calibration process to allow accurate reading of power or energy parameters. A specific laser beam has many parameters which affect the power measurement process; so it is important to trust a laser detector, which can maintain its accuracy for a long time and meet the end user’s need for high precision measurements.
For this reason, it is necessary for the manufacturer to follow a robust calibration process to achieve a detector with the highest accuracy, precision, reproducibility and repeatability, and the lowest uncertainty and error.
Gentec-EO calibrates every detector individually with the highest-level standards based on four main steps. First a comparison process to a known and traceable international standard is performed. Unlike some other laser detector manufacturers, Gentec-EO uses gold standards instead of silver standards and assures the lowest calibration uncertainty to its customers.
A laser beam with an appropriate beam size is centered on the absorbing surface of the detector and its energy is measured by using a NIST standard calorimeter and a well-calibrated beam splitter simultaneously, in order to find the calibration factor. Then, based on recognized statistical calculation standards from NIST, uncertainty calculations, in which Gentec-EO uses a high confidence level of 95%, are done.
Certification is the last process in which Gentec-EO’s ISO 9001:2015 accredited quality control system is deployed for completing the certification procedure. For every single detector, fifty parameters are collected and logged into Gentec-EO’s quality system.
Above all, Gentec-EO provides the best wavelength correction tool in the market. According to the absorption curve of each detector, Gentec-EO’s personal wavelength correction data provides you different lasers at various wavelengths over the entire range of the detector in namometer steps at the highest accuracy.
All these calibration phases together strengthen the accuracy of laser detectors. The only thing left for you, as a customer or potential customer of Gentec-EO is to select your laser wavelength from our displays or PC interfaces and enjoy the benefit of reading the most accurate measurement.
Feeling confident about the power of your laser system is quite important and Gentec-EO’s customers have had such an assurance for 45 years, by measuring their laser system’s power with the highest accuracy and lowest uncertainty in the market. If you too want to benefit such state-of-art technology, Gentec-EO’s product finder is here to help you.