Support: TriVista Triple Spectrometers
How should I select external optics to bring light into my spectrometer? [+][-]
Q: Can you provide some information on selecting external optics to bring the light into my spectrometer?
A: Below are some comments on lens selection.
Make sure the lenses are chromatically-corrected for the wavelength region of interest. You don’t want a large change in focus at different wavelengths.
Spectrometer Aperture (f/#):
In some instances it might be a good idea to use a lens pair to accomplish the object-image transfer from the sample to slit.
The first lens collects and collimates light from the sample.
Are other gratings available? [+][-]
Q: Are other gratings available for my spectrometer that are not listed on your website?
A: If you require a different grating than is available on the product web page, please contact your sales engineer to determine a custom grating that will best meet your requirement.
What are the damage thresholds of the internal optics and gratings in my Princeton Instruments spectrometer? [+][-]
Q: What are the damage thresholds of the internal optics and gratings in my Princeton Instruments spectrometer?
A. The laser damage threshold number we have for the spectrometer coatings (#1900 Al+MgF2) is approximately 500mj/cm2, 10-20Hz operation, 20ns pulses. This equals ~5-10 W/cm2.
NOTE: These were only tested at UV wavelengths. We do not have damage threshold information above 400 nm at this time. As a reference, damage thresholds are higher for longer wavelengths.