The AvaLight-DH-S is a powerful deuterium halogen source, but, like any unbalanced deuterium halogen source, it does have a very dominant alpha peak at 656 nm. This is why Avantes developed the DH-S-BAL, in which this peak is drastically reduced by a dichroic filter. This means less power, but an increase in the dynamic range of a factor 20. A comparison spectrum as taken with a standard AvaSpec-2048 is shown on the next page.
The light source delivers a continuous spectrum with high efficiency. The highest stability is in the ultraviolet, visible and near-infrared range, from 200 to 2500 nm. An integrated TTL-shutter and filter holder for filters of up to 50 x 50 x 5.0 mm are included. The TTL-shutter can be controlled from any AvaSpec spectrometer, which means the auto-save-dark option in AvaSoft software can be used (please note: IC-DB26-2 cable is needed).
Connection to the fiber is done through an SMA-905 connector, which features an adjustable focusing lens assembly. This ensures you have the maximum possible power into your fiber. 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 or bundles up to 1500 µm.
The filter holder can be easily replaced by a direct-attach cuvette holder CUV-DA-DHS (see section accessories) useful for fluorescence or absorbance measurements.
Spectral output AvaLight-DH-S-BAL (orange) vs. AvaLight-DH-S (blue)
|Balanced Deuterium (Standard)
||Balanced Halogen Lamp|
|Wavelenght Range||215 - 500 nm||500 - 2500 nm|
|Warm-up Time||30 min.||20 min.|
|Lamp Power||78W / 0.75A||5W / 0.5A|
|Lamp Lifetime||2000 hrs||1000 hrs.|
|Noise (AU)||2x 10-5||10-4|
|Max. drift||± 0.5%/hr||± 0.1%/hr|
|Color Temperature||-||3000 K|
|Optical Power in 200µm fiber||6 µW||17 µW|
|Optical Power in 600µm fiber||33 µW||160 µW|
|Optical Power in 1000µm fiber||90 µW||448 µW|
90 Watt (190 Watt for heating D-Lamp 4-5 sec.)
100-240VAC 50/60 Hz
|Dimensions / Weight||
315 x 165 x 140 mm / ca 5 kg.
|AvaLight-D-S-BAL||Balanced Deuterium Light source, 215-500 nm, incl. TTL shutter, -SR fibers needed|
|AvaLight-DH-S-BAL||Balanced Deuterium-Halogen Light source, 215-2500 nm, incl. TTL shutter, -SR fibers needed|
|IC-DB26-2||Interface cable AvaSpec-USB2 platform to AvaLight-D(H)S-BAL|
|AvaLight-D-B||Replacement deuterium bulb for AvaLight-D/AvaLight DH-BAL light source, 2000 hrs|
|AvaLight-DH-B||Replacement halogen bulb for AvaLight-DH-BAL light source|
|CUV-DA-DHS||Direct-attach cuvette holder for AvaLight-D(H)S-BAL|