The AvaLight-DH-S-BAL is an improved version of the AvaLight-DH-S combined Deuterium and halogen light source, which can be used for UV/VIS/NIR applications. The AvaLight-DH-S-BAL has an innovative optical design, in which a dichroic beam splitter is integrated to give a much more balanced spectrum from 200-2500nm. The advantage of this design is that the disturbing alfa peak at 652 nm is filtered out and therefore a smooth, balanced spectrum is obtained. The optical output power of the BAL version is a factor 5 lower than for the standard version, but the dynamic range has increased by a factor 20, thanks to the filtering of the 652nm peak. A comparison spectrum as taken with a standard AvaSpec-2048UA is depicted in figure 18. An upgrade of existing AvaLight-DH-S to the balanced version is available. The AvaLight-DH-S-BAL has an SMA905 connector to be used with fiber optic cables and bundles. For optimal coupling an adjustable focus lens assembly is included. The light source supplies a continuous spectrum with high efficiency and highest stability in the UV, visible and near-infrared range from 200-2500 nm.
For UV only applications the AvaLight-DS-BAL (only Deuterium) source is available.
For all Deuterium Light Sources solarization resistant fibers (-SR) are recommended (see the fiber optic section of this catalog). The output of the AvaLight-DH-S-BAL is optimized for fibers(bundles) with a diameter up to 1500 µm,
In all AvaLight-Deuterium sources an integrated TTL-shutter and filter holder for filters of up to 50x50x6.5 mm are implemented.
The Avalight-DHS internal TTL shutter can be controlled from the AvaSpec, so the auto-save dark option in the AvaSoft software can be used (extra IC-DB15-2 or IC-DB26-2 needed).
The filter holder can be easily replaced by a direct attach cuvette holder CUV-DHS (see section accessories) useful for fluorescence or absorbance measurements.
Spectral output AvaLight-DH-S-BAL (red) vs. AvaLight-DH-S (blue)
