Dr. Derek S. Sabatke
at BAE Systems Inc
SPIE Involvement:
Author | Instructor
Publications (37)

Proceedings Article | 4 October 2023 Presentation + Paper
Benjamin Cromey, Eric Frater, Timothy Finch, Genaro Montoya, Raymond Wright, Gregory Wirth, Derek Sabatke, Thomas Delker
Proceedings Volume 12677, 1267703 (2023) https://doi.org/10.1117/12.2674196
KEYWORDS: Diffusers, Coating, Light sources and illumination, Equipment, Optical surfaces, Calibration, Space telescopes, Reflection

Proceedings Article | 4 October 2023 Presentation + Paper
Proceedings Volume 12676, 126760O (2023) https://doi.org/10.1117/12.2677569
KEYWORDS: Mirrors, Equipment, Vacuum, Optical alignment, Stray light, Optical fabrication, Metrology, Tunable filters, Telescopes, Space telescopes

Proceedings Article | 4 October 2023 Presentation + Paper
Benjamin Cromey, Robert Von Handorf, John Pedroncelli, Thomas Delker, Derek Sabatke
Proceedings Volume 12676, 126760R (2023) https://doi.org/10.1117/12.2676488
KEYWORDS: Optical filters, Equipment, Observatories, Bandpass filters, Optical components, Vacuum chambers, Space telescopes, Mirrors, Interferometry

Proceedings Article | 3 October 2023 Poster + Paper
Gabrielle Beach, Derek Sabatke, Madeline Cowell, James Leitch, Betsy Farris, Phil Oakley, Rachel O'Connor
Proceedings Volume 12690, 126900L (2023) https://doi.org/10.1117/12.2675827
KEYWORDS: Polarization, Sapphire, Design and modelling, Crystals, Depolarization, Spectrometers, Birefringence, Remote sensing, Crystal optics, Atmospheric sensing

Proceedings Article | 27 August 2022 Poster + Paper
Proceedings Volume 12180, 121803U (2022) https://doi.org/10.1117/12.2630359
KEYWORDS: Sensors, Mirrors, Actuators, Wavefront sensors, James Webb Space Telescope, Phase retrieval

Showing 5 of 37 publications
Course Instructor
SC180: Imaging Polarimetry
This course covers imaging polarimeters from an instrumentation-design point of view. Basic polarization elements for the visible, mid-wave infrared, and long-wave infrared are described in terms of Mueller matrices and the Poincaré sphere. Polarization parameters such as the degree of polarization (DOP), the degree of linear polarization (DOLP) and the degree of circular polarization (DOCP) are explained in an imaging context. Emphasis is on imaging systems designed to detect polarized light in a 2-D image format. System concepts are discussed using a Stokes-parameter (s0,s1,s2,s3) image. Imaging-polarimeter systems design, pixel registration, and signal to noise ratios are explored. Temporal artifacts, characterization and calibration techniques are defined.
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