Centroid wavelength
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(Redirected from Centre wavelength)
The centroid wavelength is the power-weighted mean wavelength:[1]
and the total power is
where is the power spectral density, for example in W/nm.
The above integrals theoretically extend over the entire spectrum, however, it is usually sufficient to perform the integral over the spectrum where the spectral density is higher than a fraction of its maximum.
See also
[edit]References
[edit]- ^ Hieda, Keisuke; Maruyama, Tomoyuki; Narusawa, Fumio (2019-10-04). "The Importance of Centroid Wavelength for the Image Quality Evaluation of Laser Displays". SID Symposium Digest of Technical Papers. 50 (S1): 1002–1004. doi:10.1002/sdtp.13724. ISSN 0097-966X.