Newport Cornerstone 130B, Руководство пользователя

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90088262 MCS130B
CORNERSTONE 130B MONOCHROMATORS
16
4
3B
SHUTTER
An electronic shutter is integrated into the Cornerstone B
monochromator’s design. It is mounted ins ide
the housing at the input port. This shutter is normally closed.
The shutter is used to close the light path when output light is not required. This allows the light source to
remain on, and therefore remain warmed up, so that it continues to provide stable performance.
Additionally, restarting a lamp results in wear of the filament (with quartz tungsten halogen lamps) or wear
of the anode/cathode (with arc lamps). Therefore, when the light is not needed during short periods,
closing the shutter is suggested.
Diffraction gratings are mounted on a precision rotation stage inside the monochromator. When the
monochromator switches between diffraction gratings, the changing angle of the grating causes light t o
be diffracted at various wavelengths. This includes white light, which is output at a higher power than
other individual wavelengths. In order to prevent saturation of a detection system, it is suggested to clos e
the shutter temporarily while changing gratings. It is especially important to prevent saturation and
possible damage when using a photomultiplier tube.
A scan may be completed while the shutter is closed to perform background subtraction calculations on
subsequent scans completed while the shutter is open.
Please note that the shutter is not designed to block high power direct light. When using a 450W or
greater light source, heat mitigation strategies should be employed. For example, Oriel offers liquid filters
to protect the shutter, filters, and other items to prevent potential heat damage.