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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.

Journal of Research of the National Institute of Standards and Technology

|April 26, 2016

Summary

This summary is machine-generated.

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.

Keywords:

BB calorimeter K-series calorimeter beamsplitter chopper wheel comparison high-energy laser monitor detector responsivity transfer standard

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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.