Imaging Tool Expands Optical Spectrum To 2,000 eV

McPherson’s Model 251MX is described as a high-energy optical spectroscopy power tool for water window imaging, HHG laser spectroscopy, x-ray plasma diagnostics, extreme ultraviolet lithography, optical characterization, metrology, and calibration.  The Model 251MX is reported as being easy to use and delivers results over a 0.5 nm to 150 nm range by indexing diffraction gratings.

 

The McPherson Model 251MX is optimized for high energy photons including soft x-ray and extreme UV (EUVL). The Model 251MX does not scan with point detectors, it works exclusively with microchannel plate intensifiers (MCP) and/or direct detection CCD array detectors. Regardless of type, the detector is located on a flat focal plane. The aberration correction provides flat field and straight spectral lines ideal for planar detectors and good spectral resolution. 

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Diffractions gratings are from holographic masters and the laminar groove profile provide a useful feature. Laminar grating grooves have a profile that looks like a square wave. Laminar grating diffraction efficiency in even orders of light is lower than either sawtooth or sinusoidal profiles.  This helps keep a high energy spectrum clean and more easily interpretable – especially at short wavelengths. For brighter illuminations, peruse the Model 251MX datasheet.

 

McPherson

Chelmsford MA

800-255-1055

978-256-4512

http://www.mcphersoninc.com

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