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Home > Frequently Asked Questions > Products > Light Sources > What is the difference between DH-2000 and DH-2000-BAL?

What is the difference between DH-2000 and DH-2000-BAL?

All deuterium sources have an alpha line, a sharp spectral feature centered at 655 nm. This feature and other deuterium lines produce “unbalanced” output in the deuterium and halogen sources. Simply adjusting the integration time of the spectrometer to suppress the alpha line does not solve the problem as the efficiency of the system at UV wavelengths drops significantly, compromising signal-to-noise performance.

A system of proprietary internal mirrors and filters to eliminate the D-alpha, D-beta and Fulcher lines in the deuterium source, producing a “smoother” spectrum across the entire wavelength range and eliminating problems associated with saturation. By comparison, most combination UV-NIR sources can be adjusted for relative intensity only.

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DH-2000 Family

DH-2000 Family

Deuterium-Halogen Light Sources for the UV-Vis-NIR
DH-2000-BAL

DH-2000-BAL

Balanced Deuterium, Halogen Light Source for the UV-Vis-NIR