Light Source produces stable output from 215-2,000 nm.
Press Release Summary:
Deuterium Tungsten Halogen Light Source, DH-2000-BAL uses system of internal mirrors and filters to eliminate D-alpha, D-beta, and Fulcher lines in deuterium source. Unit is available with integrated shutter, operable via switch or TTL signal, or filter holder, designed for filters up to 4 mm thick. SMA 905 connector couples unit to spectrometers and accessories. Potentiometer allows users to adjust intensity of tungsten halogen output from 10%-100%.
Original Press Release:
Ocean Optics Offers First Combined-spectrum Light Source with Balanced, Peak-free Output
Deuterium Tungsten Halogen Light Source Produces "Smooth" Output from 215-2000 nm
Dunedin, Fla., August 2004 - Ocean Optics has applied its expertise in producing patterned dichroic filters to an innovation in light sources to create the first combined-spectrum illumination source for spectroscopy that eliminates saturation and signal-to-noise problems associated with the D- alpha line in the deuterium source. The DH-2000-BAL Deuterium Tungsten Halogen Light Source combines the continuous spectrum of deuterium and tungsten halogen sources, producing stable output from 215-2000 nm.
The DH-2000-BAL uses a system of proprietary internal mirrors and filters to eliminate the D-alpha, D-beta and Fulcher lines in the deuterium source, eliminating the hassles of balancing the output of the source via manipulation of software or adjustment of electronics. This is significant because all deuterium tungsten halogen sources have a D-alpha line, revealed as a sharp peak in the visible portion of the spectrum, that produces "unbalanced" output in the deuterium and tungsten halogen sources. Correcting for this peak -- a sharp spectral feature near 655 nm can be difficult. For example, if you adjust spectrometer integration time to reduce the intensity of the saturated peak, the efficiency of the system at ultraviolet wavelengths drops significantly, compromising the signal-to-noise of the spectrum. Also, spectrometer efficiency is typically greatest in the same general spectral range as the 655 nm line, exaggerating the D-alpha line's effects.
Ocean Optics offers several combined-spectrum deuterium tungsten halogen sources for spectroscopy. Each source is available with an integrated shutter (operable via switch or TTL signal) or filter holder (designed for filters up to 4 mm in thickness) and has an SMA 905 Connector for easy coupling to spectrometers and accessories. A potentiometer on the back of the light source allows users to adjust the intensity of the tungsten halogen output from 10%-100%.
The DH-2000-BAL Deuterium Tungsten Halogen Light Source is useful for absorbance, reflectance, fluorescence and transmission applications, especially where output across the ultraviolet and visible wavelength ranges is necessary. The DH-2000-BAL can be combined with an Ocean Optics HR4000CG-UV-NIR Composite-grating Spectrometer and accessories to create a versatile, fully integrated UV-VIS spectroscopy system for applications from 200-1100 nm.
The DH-2000-BAL is the result of a marriage of technologies. Ocean Optics produces the filters for the DH-2000-BAL via a proprietary process that yields filter patterns so precise they can project still images; Mikropack GmbH, a German supplier of spectroscopy accessories and thin film products, manufactures the illumination source.
For more information, contact Ocean Optics, Inc., 830 Douglas Avenue, Dunedin, FL 34698, 727.733.2447, Fax 727.733.3962, Info@OceanOptics.com. Or visit our website at OceanOptics.com.
