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Interferometer with single-axis robot: design, alignment and performance

Shakun, A.V. and Santos-Skripo, A. and Sazonov, O. and Maslov, I. and Ignatiev, N. and Stupin, I. and Arnold, Gabriele and Grigoriev, A.V. and Korablev, O. (2019) Interferometer with single-axis robot: design, alignment and performance. In: Infrared Remote Sensing andInstrumentation XXVII, 11128, 11280G. SPIE. SPIE Optical Engineering + Applications, 2019, 23.-27 August 2019, San Diego, USA. doi: 10.1117/12.2535436.

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An interferometer is an essential subsystem of the Fourier-transform spectrometer (FTS). We describe an FTS Instrument to operate at the surface of Mars based on a Michelson interferometer with hollow retroreflectors. The instrument will operate in two different regimes, observing the solar disc through the atmosphere to measure trace gases, and measuring the thermal emission from the atmosphere to study the planetary boundary layer (PBL). The interferometer has an aperture of 1 inch, operates in the spectral range 1.7-17 μm, and features low mass and volume (≤1 kg with all necessary subsystems). Beam splitter and compensator are made of potassium Bromide (KBr). A single-axis robot with stepper motor drive provides a linear movement of the retroreflector (the Speed stability is about 2%) and enables a maximal optical path difference (MOPD) of 15 cm. A reference channel with a distributed-feedback laser diode (0.76 μm) and a photodiode (Si) supports the interferogram sampling and the speed stabilization loop. The time to measure one interferogram with a best spectral resolution of about 0.05 cm–1 is 500 s (the sun tracking regime). In the thermal sounding regime, one measurement of a two-side interferogram (with the spectral resolution of ~1 cm–1) takes less than 1 min. Laboratory calibrations with a black body and a laser confirm the design parameters of the instrument.

Item URL in elib:https://elib.dlr.de/132035/
Document Type:Conference or Workshop Item (Speech)
Title:Interferometer with single-axis robot: design, alignment and performance
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Shakun, A.V.Space Research Institute, Moscow, RussiaUNSPECIFIED
Santos-Skripo, A.Space Research Institute (IKI), 84/32 Profsoyuznaya, 117997 Moscow, RussiaUNSPECIFIED
Sazonov, O.Space Research Institute of Russian Academy of Scienses, Moscow, RussiaUNSPECIFIED
Maslov, I.Space Research Institute of Russian Academy of Scienses, Moscow, RussiaUNSPECIFIED
Ignatiev, N.Space Research Institute, Moscow, RussiaUNSPECIFIED
Stupin, I.Space Research Institute of Russian Academy of Scienses, Moscow, RussiaUNSPECIFIED
Arnold, GabrieleGabriele.Arnold (at) dlr.deUNSPECIFIED
Grigoriev, A.V.Space Research Institute, Moscow, RussiaUNSPECIFIED
Korablev, O.Space Research Institute, Moscow, RussiaUNSPECIFIED
Journal or Publication Title:Infrared Remote Sensing andInstrumentation XXVII
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1117/12.2535436
Page Range:11280G
Series Name:Proceedings of SPIE - The International Society for Optical Engineering
Keywords:FTIR, remote sensing, Mars
Event Title:SPIE Optical Engineering + Applications, 2019
Event Location:San Diego, USA
Event Type:national Conference
Event Dates:23.-27 August 2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Exploration of the Solar System
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Leitungsbereich PF
Deposited By: Arnold, Dr. Gabriele
Deposited On:09 Dec 2019 08:30
Last Modified:09 Dec 2019 08:30

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