An improved reference interferometer, incorporating an angular positioning servo, used to tune a narrow bandwidth optical filter
J G Winter; D G S Groeneveld; C N Sharman; J G Winter; CSIRO Div. of Appl. Phys., Sydney, NSW, Australia; D G S Groeneveld; CSIRO Div. of Appl. Phys., Sydney, NSW, Australia; C N Sharman; CSIRO Div. of Appl. Phys., Sydney, NSW, Australia
Журнал:
Journal of Physics E: Scientific Instruments
Дата:
1981-04-01
Аннотация:
A reference interferometer based on an earlier design has been developed, in which a reference wedge is rotated by a direct-drive position servo-system. The reference interferometer is used to set the spacing of Fabry-Perot interferometer plates in a narrow bandwidth optical filter. The instrument is designed to contain a nitrogen atmosphere and to operate under adverse conditions.
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