McPherson Unveils UV Spectrometer for 120-900nm Applications
The firm, based in Chelmsford, Massachusetts, designs and builds tools to measure frequency and intensity of light wavelengths / rays with good spectral resolution over a wide free range. McPherson ‘s instruments can be used for measurement of wavelengths through the X Ray, Vacuum, UV, Visible and Infrared (IR, including MWIR and LWIR) regions.
The instrument should be suited to the measurement of different emission wavelengths in III-V semiconductors, for example gallium arsenide (GaAs) quantum wells.
McPherson is marketing its vacuum ultraviolet spectrometer, Model 234/302, which is claimed to offer improved efficiency over a wide wavelength range (120nm to 900nm). In addition, platinum coated gratings can be used at windowless wavelengths, shorter than 120 nanometers (>10eV.)
The compact 200mm focal length spectrometer can be supplied with various gratings to spread optimization over the entire 30nm to 550nm wavelength range; an advantage allowed by the optical design. In combination with windowless, sensitive, cooled, scientific grade CCD detectors, adjustable slits, and f/4.5, the McPherson Model 234/302 provides fast, sensitive data collection.
Extreme and vacuum ultraviolet radiation and emission spectra can be analyzed with sub-nanometer spectral resolution. Adjustable slit width provides for best light throughput and for better spectral resolution to resolve closely spaced spectral lines.
Tunability of the installed grating to longer or shorter wavelengths provides means to collect different simultaneous wavelength swaths for general-purpose spectroscopy, plasma physics, and process monitoring without compromising resolution or signal strength.
The newly introduced Platinum coated optics improve utility of the Model 234/302 vacuum ultraviolet spectrometer system. Furnished with spectral calibration certificate, the McPherson spectrometer is available with standard light sources, reflective condenser optics, and vacuum differential sections.
