AvaLight-DHS-BAL, Balanced Output Deuterium-Halogen Light Source

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 652nm 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 the standard version, but the dynamic range has increased by a factor 20, thanks to the filtering of the 652nm peak. A comparison spectrum has been taken with a standard AvaSpec-2048UA and is shown in the curve below.

An upgrade of existing AvaLight-DH-S models to the balanced version is also possible, please contact us for pricing.

The AvaLight-DH-S-BAL has an SMA905 connector to be used with fibre 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 200-2500nm.

For UV only applications, the AvaLight-D-S-BAL (Deuterium only) source is available.

For all Deuterium light sources, solarisation resistant fibres (-SR) are recommended (see the fiber optics section). The output of the AvaLight-DH-S-BAL is optimised for fibres (bundles) with a diameter up to 1500 µm.

In all AvaLight-Deuterium sources, an integrated TTL-shutter and a filter holder for filters of up to 50 x 50 x 6.5mm is included.

The AvaLight-DHS internal TTL shutter can be controlled from the AvaSpec spectrometer so the auto-save dark option in the AvaSoft software can be used (an IC-DB15-2 or IC-DB26-2 interface cable is required).

The filter holder can easily be replaced by a direct attach cuvette holder 'CUV-DHS' (see accessories section) if so preferred which is useful for fluorescence or absorbance measurements.

Spectral Output of the AvaLight-DHS-BAL (red) vs the AvaLight-DHS (blue)

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