Get Balanced! The innovative DH-2000-BAL is the world's only balanced UV-NIR deuterium tungsten halogen source.
We've applied our expertise in patterned dichroic filters to an innovation in light source technology to create the only combined-spectrum illumination source available that eliminates saturation and signal-to-noise problems associated with the D-alpha line in the deuterium source.
Features
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Eliminates D-alpha line in deuterium source
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Stable output 215-2000 nm
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Innovative filtering technology produces smooth spectrum across entire range
The DH-2000-BAL Deuterium Tungsten Halogen Light Source combines the continuous spectrum of deuterium and tungsten halogen light sources in a single optical path, producing a powerful, stable output from 215-2000 nm.
The DH-2000-BAL is available for Call for Price.
About the D-alpha Line
All deuterium-tungsten halogen sources have a D-alpha line, revealed as a jagged peak in the visible portion of the spectrum, that produces "unbalanced" output in the deuterium and tungsten halogen sources. Correcting for this deuterium line -- a sharp spectral feature near 655 nm -- is difficult. For example, if you adjust spectrometer integration time to reduce the intensity of this saturated spectral line, the efficiency of the system at UV wavelengths drops significantly, compromising signal-to-noise performance. Also, spectrometer efficiency is greatest in the same general spectral range as the 655 nm line, exaggerating its effects.
Proprietary Filtering Technology
Using the same high-precision patterned dichroic filter technology that distinguishes our Linear Variable Filters, the DH-2000-BAL balances the intensity of the deuterium and tungsten halogen sources, producing a "smoother" spectrum across the entire wavelength range and eliminating problems associated with saturation. By comparison, most combination UV-NIR sources can be adjusted for relative intensity only.
Optical Fibers
We recommend using our solarization-resistant optical fibers with all versions of the DH-2000-BAL.
DH-2000-BAL Spectrum
A spectrum of the DH-2000-BAL, taken with an HR4000-CG-UV-NIR in scope mode, shows a balanced response across the UV-VIS-NIR with no D-alpha line.
DH-2000-BAL Specifications
| Dimensions: |
150 mm x 135 mm x 319 mm |
| Weight: |
3.8 kg |
| Power consumption: |
25 W (deuterium); 20 W (tungsten halogen) |
| Wavelength range: |
215-400 nm (deuterium bulb)
360-2000 nm (tungsten halogen bulb) |
| Humidity: |
5-95% without condensation at 40 °C |
| Tungsten bulb voltage: |
adjustable from 4.5 to 11.5 volts |
| Lamp current: |
Operating 85 V/0.3A |
| Lamp lifetime: |
1,000 hours |
| Lamp voltage: |
Ignition 350 V/20° |
| Current voltage drift: |
<0.01% per hour |
| Current voltage stability: |
<5 x 10-6 peak-to-peak (0.1-10.0 Hz) |
| Operating temperature: |
5 °C - 35 °C |
| Power requirements: |
85-264 V 50/60 Hz |
| Total power: |
100 W |
| Power consumption: |
190 W maximum |
| Warm-up time: |
40 minutes (deuterium);
20 minutes (tungsten halogen) |
| Markings: |
CE; VDI/VDE 0160; EN 61010 | |
