Multispectral power meter

James W. Hoffman; Ronald C. Grush; Richard A. Heppner

doi:10.1117/12.158571

15 October 1993 Multispectral power meter

James W. Hoffman, Ronald C. Grush, Richard A. Heppner

Proceedings Volume 2022, Photodetectors and Power Meters; (1993) https://doi.org/10.1117/12.158571
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

As optical sensor and source technologies advance, it is important to improve the ability to accurately calibrate these sensors and sources. A new type of power meter which has excellent absolute accuracy, long term stability, and linear output over its full dynamic range will be described. The Multispectral Power Meter (MSP) makes direct power measurements by the substitution of electrical power to balance the radiant power from a radiation source. The MSP can operate in air at ambient temperature, in a vacuum environment, or even in space. It monitors ultraviolet to far infrared wavelengths with equal responsivity and can thus measure laser output at any wavelength or blackbodies at any temperature. In addition to characterizing the output from spectral sources, the MSP can also calibrate sensors and act as a transfer standard from a cryogenic primary standard. A digital controller enables the MSP to be remotely operated. The various measurement techniques and the performance levels of the MSP will be described.

Citation Download Citation

James W. Hoffman, Ronald C. Grush, and Richard A. Heppner "Multispectral power meter", Proc. SPIE 2022, Photodetectors and Power Meters, (15 October 1993); https://doi.org/10.1117/12.158571

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