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 215 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 fibre is done through an SMA-905 connector, which features an adjustable focusing lens assembly. This ensures you have the maximum possible power into your fibre. For all deuterium light sources, solarization-resistant fibres (-SR) are recommended (see the fibre-optic section of this catalogue). The output of the AvaLight-DH-S-BAL is optimized for fibres 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.
Benefits
- Balanced light source
- Broad spectrum: 215-2500 nm
- Integrated TTL shutter
- High efficiency
- Increased dynamic range
Product Information
| Balanced Deuterium (Standard) | Balanced Halogen Lamp | |
|---|---|---|
| Wavelength 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) | 2×10-5 | 10-4 |
| Max. drift | ± 0.5%/hr | ± 0.1%/hr |
| Color temperature | N.a. | 3000 K |
| Optical power in 200 µm fiber | 6 µW | 17 µW |
| Optical power in 600 µm fiber | 33 µW | 160 µW |
| Optical power in 1000 µm fiber | 90 µW | 448 µW |
| Power consumption | 90 Watt (190 Watt for heating D-lamp 4-5 sec) | 90 Watt (190 Watt for heating D-lamp 4-5 sec) |
| Power requirements | 100-240 VAC 50/60 Hz | 100-240 VAC 50/60 Hz |
| Dimensions, weight | 315 x 165 x 140 mm, ca. 5 kg | 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 |