Model 608 Fastie-Ebert Prism Monochromator for Order Sorting and Bandpass Selection0 pages
mcPHEHsnn
nnnnModel 608
nnnnPrism
nnnnPredisperser
nnnnGENERAL DESCRIPTION
nnnnThe Model 608 Prism Predisperser is a small
nnnnprism monochromator that may be used with
nnnnmany McPherson UV-Vis-IR scanning monochro-
nnnnmators. Throughout its range (185 to 2600-nm), it
nnnneliminates multiple order effects and reduces stray
nnnnlight by narrowing the bandwidth of broad sources
nnnnused for monochromator illumination.
nnnnThe predisperser employs a 500-micron fixed
nnnnwidth entrance slit, a fused silica prism, a 6-inch
nnnnfocal length collimating and focusing mirror and
nnnndiverting mirrors.
nnnnThe Model 608 Prism Predisperser mounts di-
nnnnrectly to the entrance slit assembly. Efficient
nnnnoptical coupling between the predisperser and the
nnnnmonochromator is achieved by using the entrance
nnnnslit of the monochromator as the exit slit of the
nnnnpredisperser. The predisperser is scanned through
nnnnthe wavelength range by a precision cam that
nnnnprovides linear wavelength change with a uniform
nnnnrotation drive shaft. Using the optional connecting
nnnnshaft, the drive can be coupled directly to the
nnnnmonochromator wavelength drive for synchronized
nnnnscanning throughout the wavelength range of the
nnnnpredisperser.
nnnnA wavelength counter that indicates wavelength in
nnnnnanometers is supplied with the Model 608.
nnnnIt is easy to make your single
nnnnmonochromator a double!
nnnnThe Model 608 prism predisperser fits directly
nnnnto McPherson Models 218,2051,207, 2061,
nnnn209 and 2062. Simply bolt the Model 608 on
nnnnand couple to the primary monochromator
nnnndrive system. At the users preference an
nnnnindependent drive system can be used.
nnnnThis easy to install system provides double
nnnnmonochromator stray light rejection in a
nnnnmanner adaptable to existing instruments.
nnnnThe variation of Dispersion due to Refractive Index
nnnnacross the working range of the Prism Predisperser
nnnn400
nnnn350
nnnn300
nnnn250
nnnn200
nnnn150
nnnn100
nnnn200 400 600 800 1000 1200 1400 1600 1800
nnnnWavelength (nm)
nnnnSales@mcphersoninc.com, Tel 978-256-4512, Fax 978-250-8625, McPherson 7A Stuart Road Chelmsford MA 01824 USA
"