A reference calorimeter for laser energy measurements
- 1 January 1972
- journal article
- Published by National Institute of Standards and Technology (NIST) in Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry
- Vol. 76A (1) , 13-26
- https://doi.org/10.6028/jres.076a.002
Abstract
Principles and detailed procedures are described for measuring laser energy and power in terms of electrical energy based on voltage, resistance, and frequency standards. The construction of a small isoperibol calorimeter used for the measurements is described. The calorimeter will accommodate 0.01 to 20 J and 4 × 10-5 to 1 W cw and is limited to a maximum pulse intensity of 0.1 J/cm2. The standard deviation of comparison measurements using two calorimeters and a beam splitter is 0.08 percent when the smaller energy input is not less than 0.3 J. The estimated limits of systematic error for one calorimeter are ± 1.0 percent of the laser energy measured by the calorimeter.Keywords
This publication has 1 reference indexed in Scilit:
- Calorimeter for Laser Energy MeasurementsApplied Optics, 1971