Sub-picometer resolution from a low-cost wavelength meter - PowerPoint PPT Presentation
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Sub-picometer resolution from a low-cost wavelength meter
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One arm comprises retroreflecting mirror on inexpensive air track cart ... LabView & GPIB automated. data acquisition. retroreflector. reference. laser ... – PowerPoint PPT presentation
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Title: Sub-picometer resolution from a low-cost wavelength meter
1
Sub-picometer resolution from a low-cost
wavelength meter
Adam Banfield, Sarah Anderson and Chad
Hoyt Bethel University, St. Paul, MN
How it works Because the beams travel identical
pathlengths the wavelengths are proportional
through the ratio of counted fringes, NR/NU
reference laser
retroreflector
LabView GPIB automated data acquisition
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