The AvaLight-DH-S is a combined Deuterium and Halogen light source, which can be used for UV/VIS/NIR applications. The AvaLight-DH-S 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 215-2500 nm.
The Avalight-DH-S was developed based on the shine-through principle, in which the halogen light is focused through a small diameter aperture in the deuterium bulb. The AvaLight-DH-S-BAL has a dichroic beam splitter to give a much more balanced spectrum from 200-2500nm.
For UV only applications the AvaLight-D-S (only Deuterium) source is available.
The standard AvaLight-D(H)-S light sources have a special UV longpass filter (>220nm) implemented to protect the fibers from solarizing. For applications that require a spectral range below 220 nm a Deep UV bulb is available, in which no UV longpass filter is included. For these Deep-UV measurements (from 190nm) the AvaLight-D(H)-S-DUV may be ordered. New is a long-life and more stable version of the Deuterium lamp (AvaLight-D-B-DUV-LL)
For all Deuterium Light Sources solarization resistant fibers (-SR) are recommended, for the DUV lamp special solarization resistant fibers (-SR) are required (see the fiber optic section).
The output of the AvaLight-DH-S is optimized for fibers(bundles) with a diameter up to 600 µm, for larger diameter fiber bundles the AvaLight-DH-S SMA connector focal point can be manually adapted to uniformly fill a larger core diameter fiber cable or bundels.
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-D-S
Spectral output AvaLight-DH-S
Technical Data
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Deuterium (Deep UV)
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Deuterium (Standard)
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Deuterium (long-life DUV)
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Halogen Lamp
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Wavelength Range
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190-400nm
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215-400nm
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185-400nm
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360-2500nm
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Warm-up Time
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30 min.
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30 min.
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30 min.
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20 min.
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Lamp Power
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78W / 0.75A
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78W / 0.75A
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78W / 0.75A
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5W /0.5A
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Lamp Lifetime
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1000 hrs
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1000 hrs
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2000 hrs
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1000 hrs
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Noise (AU)
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2x 10-4
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2x 10-4
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2x 10-5
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10-4
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Max. drift
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± 0.5%/hrs
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± 0.5%/hrs
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± 0.5%/hrs
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±0.1%/hrs
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Color Temperature
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-
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-
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-
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3000 K
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Optical Power in 200μm fiber
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11 µW
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7 µW
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11 µW
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43 µW
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Optical Power in 600μm fiber
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72 µW
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61 µW
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72 µW
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239 µW
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Optical Power in 1000μm fiber
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206 µW
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166 µW
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206 µW
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354 µW
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Power consumption
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90 Watt (190Watt for heating D-Lamp 4-5 sec.)
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Power Requirements
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100-240VAC 50/60 Hz
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Dimensions / Weight
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315 x 165 x 140 mm / ca 5 kg.
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For a table of seperate 50x50mm filters to install in AvaLight-D(H)-S see AvaLight-HAL.
Ordering Information
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AvaLight-D-S
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Deuterium light source, 215-400 nm, incl. TTL shutter, -SR fibers needed
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AvaLight-DH-S
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Deuterium-Halogen light source, 215-2500 nm, incl. TTL shutter, -SR fibers needed
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AvaLight-D-S-DUV
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Deep UV deuterium light source, 190-400 nm, incl. TTL shutter, -SR fibers needed!
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AvaLight-DH-S-DUV
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Deep UV deuterium-halogen light source, 190-2500 nm, incl. TTL shutter, -SR fibers needed!
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AvaLight-DH-S-DUV-LL
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Deep UV deuterium-halogen light source, long-life 2000 hrs. 190-2500nm, incl. TTL shutter, -SR fiber needed!
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IC-DB15-2
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Interface cable AvaSpec-USB1 platform to AvaLight-D(H)S
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IC-DB26-2
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Interface cable AvaSpec-USB2 platform to AvaLight-D(H)S
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AvaLight-D-B
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Replacement deuterium bulb for AvaLight-D/AvaLight DH light source
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AvaLight-D-B-DUV
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Replacement deep UV deuterium bulb for AvaLight-D/AvaLight DH light source
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AvaLight-D-B-DUV-LL
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Long-life 2000 hrs. Replacement deep UV deuterium bulb for AvaLight-D/AvaLight DH light source
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AvaLight-DH-B
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Replacement halogen bulb for AvaLight-DH light source
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CUV-DHS
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Direct attach cuvette holder for AvaLight-D(H)S
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