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DH-2000-BAL Light Source

Item Code: DH-2000-BAL

Lead Time: 2 - 3 weeks



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The DH-2000-BAL uses innovative filtering technology to produces a smooth spectrum across entire UV-NIR range. This technology also eliminates the alpha deuterium line in the visible region. Using a combination of deuterium and halogen lamps, the DH-2000 is ideal for measuring a sample that has multiple features in different spectral regions or for analyzing a variety of different samples in your lab.

All deuterium sources have an alpha line, a sharp spectral feature centered at 655 nm. This feature and other deuterium lines produce “unbalanced” output in the deuterium and halogen sources. Simply adjusting the integration time of the spectrometer to suppress the alpha line does not solve the problem as the efficiency of the system at UV wavelengths drops significantly, compromising signal-to-noise performance.


  • Innovative filtering -- eliminates D-alpha line in deuterium source
  • Balanced output from 215-2500 nm -- eliminates problems associated with saturation
  • Powerful and stable -- deuterium (25 W) and halogen lamps (20 W) combined in a single light source
  • Integrated shutter -- helps protect light-sensitive samples
  • Easy-to-replace, pre-aligned bulbs -- minimal downtime needed for bulb replacement


Subject to change depending on model type


Nominal Bulb Power:
25 W (deuterium), 20 W (tungsten halogen)
Deuterium & Tungsten Halogen
Typical Output Power:
194 µW (deuterium bulb), 615 µW (tungsten bulb)
Wavelength Range:
230nm - 2.5μm
Drift of Optical Output:
≤0.1%/hour @ 254 nm (deuterium), ≤0.1%/hour @ 700 nm (tungsten halogen)
Source Lifetime:
1,000 hours
Stability of Light Source Output:
≤0.1%/hour @ 254 nm (deuterium), ≤0.1%/hour @ 700 nm (tungsten halogen)
Warm-up Time:
25 minutes


Safety & Regulatory:
Operating Humidity Specification:
5-95% without condensation at 40 °C
Operating Temperature:
5 °C – 35 °C


Fiber Connector:
SMA 905
15 x 13.5 x 28.5 cm
Integrated Cuvette Holder:
Integrated Filter Holder:
Power Consumption:
Approximately 78VA
Power Requirements:
85-264 V 50/60 Hz
Trigger/Shutter Input Connection:
SUB-D-15 pin
Trigger/Shutter Input Signal:
TTL; Up to 2.5 Hz maximum
5.5 kg