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Chapter 6: WinSpec/32 and WinView/32
First Light Procedure
This chapter provides a step-by-step procedure for placing a spectroscopy system in
operation for tthe first time when using Princeton Instruments’ WinSpec/32 data acquisition
software. The intent of this procedure is to gain basic familiarity with the operation of the
system and to show that it is functioning properly. Once basic familiarity has been
established, then operation with other operating configurations, ones with more complex
timing modes, can be performed. This chapter assumes that the detector is being operated
with an IsoPlane SCT-320 spectrograph on which it has been properly installed.
REFERENCES:
Refer to Appendix C, IsoPlane 320 Mounting , on page 105 for
mounting instructions.
In a typical spectrograph, light enters the entrance slit and is collected by a collimating
mirror. Collimated light strikes the grating and is dispersed into individual wavelengths (i.e.,
colors.) Each wavelength leaves the grating at a different angle and is reimaged by a
focusing mirror onto the exit focal plane. Essentially, a spectrograph forms an image of the
entrance slit in the exit focal plane with each position in the plane representing a different
wavelength. Since each wavelength falls at a different horizontal position, the spectrum of
the input light is spread across the array. Individual wavelengths focused at different
horizontal positions along the exit port of the spectrograph are detected simultaneously.
Rotating the diffraction grating scans wavelengths across the array, allowing the intensity at
individual wavelengths to be readily measured.
A suitable light source, such as an NeAr light source or an incandescent light bulb, should
be mounted in front of the spectrograph’s entrance slit.
CAUTION!
!
Overexposure Protection:
Detectors that are exposed to room
light or other continuous light sources quickly become
saturated. If the detector is mounted to a spectrograph, close
the entrance slit of the spectrograph to reduce incident light.