PPT-A method of step height and plate thickness measurement wit
Author : liane-varnes | Published Date : 2017-01-22
Naoyui Koyama Michelson interferometer Use two lasers simultaneously Laser a wavelength λ a Laser b wavelength λ b Laser a and laser b do not interfere
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A method of step height and plate thickness measurement wit: Transcript
Naoyui Koyama Michelson interferometer Use two lasers simultaneously Laser a wavelength λ a Laser b wavelength λ b Laser a and laser b do not interfere each other. B
WAFER
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MEASUREMENT AXIS
PROBE A
PROBE B
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