Evaluating the inequivalence and a computational simplification for the NBS laser energy standards
Abstract
A model with two time constants is used to estimate the inequivalence in response between a laser energy pulse and an electrical energy pulse put into a calorimeter of the C series type. The results are as follows: the calorimeter labeled C41 showed a 0.15% inequivalence and the calorimeter labeled C46 showed none. We also find that the complicated model currently used to get the corrected temperature rise of a measurement can be replaced by a simpler fourdatapoint method with no significant loss in accuracy. This simplification means we can substitute a microprocessor for a large computer to get the corrected temperature rise in an electrical calibration or laser energy measurement.
 Publication:

Applied Optics
 Pub Date:
 August 1977
 DOI:
 10.1364/AO.16.002315
 Bibcode:
 1977ApOpt..16.2315J
 Keywords:

 Calorimeters;
 Heat Measurement;
 Laser Outputs;
 Standards;
 Calibrating;
 Microprocessors;
 Temperature Measurement;
 Thermal Diffusion;
 Lasers and Masers;
 LASERS;
 STANDARDS;
 ENERGY;
 CALORIMETRY;
 NATIONAL BUREAU OF STANDARDS