An absolute method for measuring the energy output of a laser
- 1 June 1967
- journal article
- other
- Published by IOP Publishing in Journal of Scientific Instruments
- Vol. 44 (6) , 468-469
- https://doi.org/10.1088/0950-7671/44/6/416
Abstract
A laser output meter is described in which the detector element is a hollow sphere consisting of one piece of insulated, thin copper wire. Light coming through a small hole into the sphere is totally absorbed. The change in resistance caused by the change of temperature is measured by a d.c. Wheatstone bridge. This hollow `rat's nest' is simple to calibrate by heating with known current pulses. A practical hollow `rat's nest' calorimeter is described.Keywords
This publication has 1 reference indexed in Scilit:
- Power and energy measuring techniques for solid state lasersInfrared Physics, 1966