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Light Sources
- Tungsten-Halogen Light Sources
TH is a general light source for visible and NIR range spectroscopic applications. Tungsten-Halogen lamps are near blackbody sources of light with fused silica envelopes around the tungsten filaments and a small quantity of an active halogen gas such as Bromine. The TH light source provides a very stable and smooth spectral output so it can be applied to spectroscopic measurements (transmittance/reflectance/absorption) and color measurements. The dominant spectrum is from 300nm to 2.6µm depending on the color temperature of each lamp (due to the deep absorption band and the natural transmittance of the fused silica envelopes, the IR range is limited to 2.6µm).
- Deuterium Light Source
D2 is a general light source for UV range spectroscopic applications. D2 lamps produce intense ultraviolet radiation by maintaining a stable electric arc in a deuterium atmosphere. The spectral power distribution of this radiation has a continuous range that extends from 160 to 400 nm (D2 spectrum). This continuous and stable characteristic of the arc makes deuterium lamps the most useful source of UV for analytical instruments, including spectrophotometers, liquid chromatography detectors, medical analyzers, pollution analyzers, colorimeters, and densitometers. Because of the stability and reproducibility of deuterium lamps, they are suitable as secondary calibration standards in the ultraviolet region.
- Xenon Light Source
Xe is a general light source for UV, visible, and NIR range spectroscopic applications. The spectrum curve in the visible range is relatively flat compared to other light sources. The 175W Xe light source (Xe spectrum) is a compact and lightweight high-intensity light source. It is especially suitable as a light source for spectroscopy, microscopy, optical scanning, and industrial uses, as well as for use with SP's popular Digikröm monochromators and spectrographs. According to the bulb type, it can cover ~185-2200nm (dominantly, ~250-1100nm), ~320-2200nm (dominantly, ~320nm-1100nm), and ~400-700nm.
- IR Emitters
CFIR is a general light source for IR range spectroscopic applications. The coiled filament operates at approximately 975°C when powered with 11 watts (ASB-IR-12K). The radiating element is a coil of resistance wire which has a high emissivity in the infrared spectral region (1.0µm ~ 30.0µm). The coil is supported on a grooved cylindrical substrate of alumina, resulting in the windings being electrically insulated from each other and this contributes to a more uniform radiating source.
- Hybrid Light Sources
By the combination of a deuterium lamp and a tungsten-halogen lamp, the whole spectral range from deep UV to NIR (185-2500nm) can be covered.
- Calibration Light Sources
Depending on the gas contained within a lamp, discrete spectral lines of defined wavelength, spectral width, and relative intensity can be obtained.
- Wavelength Tunable Light Sources
With the combination of a monochromator and a broad-band light source, continuously tunable, narrow-band wavelength light can be achieved. The bandwidth depends on the slit width and the grating groove density used in the monochromator (~1-20nm, typically).
- Monochromators
Monochromators act as tunable bandpass filters for light. They are the critical component for many spectral applications since they can be used to create tunable light sources and also to take high precision spectral measurements. The Digikröm line of monochromators, available in 1/8, 1/4, and 1/2 meter focal lengths, use electronics that are 'designed-in', rather than appended via accessories or other add-ons after the instrument has been manufactured. The Direct Digital Drive is simple and reliable; a microprocessor-controlled stepper motor, moving in wavelength increments as small as .01nm per step, is linked directly to the grating mount by a worm and worm wheel arrangement. This results in improved accuracy, automatic grating changes, and exceptional ruggedness.
Application
SP monochromators can be applied to various applications: including semiconductor, biomedical, manufacturing, petrochemicals, pulp/paper, clinical labs, QC labs, research & development, pharmaceutical, environmental control, polymers, and mining/metals.
Spectral Products offers a full line of monochromators:
SP monochromators can be applied to various applications: including semiconductor, biomedical, manufacturing, petrochemicals, pulp/paper, clinical labs, QC labs, research & development, pharmaceutical, environmental control, polymers, and mining/metals.
Spectral Products offers a full line of monochromators:
- 1/2m Monochromator
- 1/4m Monochromator
- 1/8m Monochromator
- DK & CK options
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