Comparison Between NIST and AF Laser Energy Standards Using High Power Lasers
Xiaoyu Li1, Thomas Scott Retired1, Chris Cromer1
1National Institute of Standards and Technology, Boulder, CO 80305.
Summary
High-energy laser calorimeter comparisons between the National Institute of Standards and Technology (NIST) and the U.S. Air Force Primary Standards Laboratory (AFPSL) showed excellent agreement. A transfer standard laser power meter was calibrated at both labs, confirming measurement consistency within uncertainties.
Area of Science:
- Metrology
- Laser Physics
- Optical Engineering
Background:
- Accurate high-energy laser power measurements are critical for various scientific and industrial applications.
- Interlaboratory comparisons are essential for validating measurement capabilities and ensuring traceability.
Purpose of the Study:
- To compare the high-energy laser calorimeter measurement capabilities of NIST and AFPSL.
- To assess the agreement between the two laboratories using a calibrated transfer standard.
Main Methods:
- A laser power meter was used as a transfer standard.
- The transfer standard was calibrated sequentially at NIST and AFPSL.
- Measurements were performed using CO2 lasers at 800 W and 10.6 μm wavelength.
Main Results:
- Excellent measurement agreement of 1.02% was achieved between NIST and AFPSL.
- The demonstrated agreement was well within the expanded uncertainties of both laboratories.
Conclusions:
- The comparison validates the high-energy laser measurement capabilities of both NIST and AFPSL.
- The results demonstrate consistency and traceability in high-energy laser power metrology.
