title: Design and laboratory tests of a Doppler Asymmetric Spatial Heterodyne (DASH) interferometer for upper atmospheric wind and temperature observations.
abstract: We describe the design, fabrication and laboratory tests of a Doppler Asymmetric Spatial Heterodyne (DASH) interferometer for upper atmospheric wind and temperature observations of the O[1D] 630 nm emission. The monolithic interferometer has no moving parts, a large étendue, relaxed fabrication and alignment tolerances and can measure multiple emission lines simultaneously. Laboratory measurements indicate that the design resolution and étendue were achieved and that thermal drifts can be determined with sufficient precision for geophysical applications.
authors.affiliation: Department of Physics, St Cloud State University, 720 Fourth Avenue South, St Cloud, Minnesota 56301, USA. jmharlander@stcloudstate.edu
authors.forename: John M
authors.initials: JM
authors.lastname: Harlander
authors.forename: Christoph R
authors.initials: CR
authors.lastname: Englert
authors.forename: David D
authors.initials: DD
authors.lastname: Babcock
authors.forename: Frederick L
authors.initials: FL
authors.lastname: Roesler
mesh_terms: D001272:Atmosphere / Q000032:analysis*; D017076:Computer-Aided Design; D004784:Environmental Monitoring / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D017078:Laser-Doppler Flowmetry / Q000295:instrumentation*; D013817:Thermography / Q000295:instrumentation*; D014919:Wind