Characterization of deformable mirrors for the MagAO-X project

Kyle Van Gorkom; Kelsey L. Miller; Jared R. Males; Olivier Guyon; Alexander T. Rodack; Jennifer Lumbres; Justin M. Knight

doi:10.1117/12.2323450

Characterization of deformable mirrors for the MagAO-X project

Kyle Van Gorkom, Kelsey L. Miller, Jared R. Males, Olivier Guyon, Alexander T. Rodack, Jennifer Lumbres, Justin M. Knight

Optical Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Scopus citations

Abstract

The MagAO-X instrument is an upgrade of the Magellan AO system that will introduce extreme adaptive optics capabilities for high-contrast imaging at visible and near-infrared wavelengths. A central component of this system is a 2040-actuator microelectromechanical (MEMS) deformable mirror (DM) from Boston Micromachines Corp. (BMC) that will operate at 3.63 kHz for high-order wavefront control. Two additional DMs from ALPAO will perform low-order and non-common-path science-arm wavefront correction. The accuracy of the wavefront correction is limited by our ability to command these DMs to a desired shape, which requires a careful characterization of each DM surface. We have developed a characterization pipeline that uses a Zygo Verifire Interferometer to measure the surface response and a Karhunen-Loeve transform to remove noise from our measurements. We present our progress in the characterization process and the results of our pipeline applied to an ALPAO DM97 and a BMC Kilo-DM, demonstrating the ability to drive the DMs to a flat of ≤2nm and ≤4nm RMS in our beam footprint on the University of Arizona Wavefront Control (UAWFC) testbed.

Original language	English (US)
Title of host publication	Adaptive Optics Systems VI
Editors	Dirk Schmidt, Laura Schreiber, Laird M. Close
Publisher	SPIE
ISBN (Print)	9781510619593
DOIs	https://doi.org/10.1117/12.2323450
State	Published - 2018
Event	Adaptive Optics Systems VI 2018 - Austin, United States Duration: Jun 10 2018 → Jun 15 2018

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10703
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Adaptive Optics Systems VI 2018
Country/Territory	United States
City	Austin
Period	6/10/18 → 6/15/18

Keywords

deformable mirrors
extreme adaptive optics
high-contrast imaging

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2323450

Cite this

Van Gorkom, K., Miller, K. L., Males, J. R., Guyon, O., Rodack, A. T., Lumbres, J., & Knight, J. M. (2018). Characterization of deformable mirrors for the MagAO-X project. In D. Schmidt, L. Schreiber, & L. M. Close (Eds.), Adaptive Optics Systems VI [107035A] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10703). SPIE. https://doi.org/10.1117/12.2323450

Characterization of deformable mirrors for the MagAO-X project. / Van Gorkom, Kyle; Miller, Kelsey L.; Males, Jared R. et al.

Adaptive Optics Systems VI. ed. / Dirk Schmidt; Laura Schreiber; Laird M. Close. SPIE, 2018. 107035A (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10703).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Van Gorkom, K, Miller, KL, Males, JR, Guyon, O, Rodack, AT, Lumbres, J & Knight, JM 2018, Characterization of deformable mirrors for the MagAO-X project. in D Schmidt, L Schreiber & LM Close (eds), Adaptive Optics Systems VI., 107035A, Proceedings of SPIE - The International Society for Optical Engineering, vol. 10703, SPIE, Adaptive Optics Systems VI 2018, Austin, United States, 6/10/18. https://doi.org/10.1117/12.2323450

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title = "Characterization of deformable mirrors for the MagAO-X project",

abstract = "The MagAO-X instrument is an upgrade of the Magellan AO system that will introduce extreme adaptive optics capabilities for high-contrast imaging at visible and near-infrared wavelengths. A central component of this system is a 2040-actuator microelectromechanical (MEMS) deformable mirror (DM) from Boston Micromachines Corp. (BMC) that will operate at 3.63 kHz for high-order wavefront control. Two additional DMs from ALPAO will perform low-order and non-common-path science-arm wavefront correction. The accuracy of the wavefront correction is limited by our ability to command these DMs to a desired shape, which requires a careful characterization of each DM surface. We have developed a characterization pipeline that uses a Zygo Verifire Interferometer to measure the surface response and a Karhunen-Loeve transform to remove noise from our measurements. We present our progress in the characterization process and the results of our pipeline applied to an ALPAO DM97 and a BMC Kilo-DM, demonstrating the ability to drive the DMs to a flat of ≤2nm and ≤4nm RMS in our beam footprint on the University of Arizona Wavefront Control (UAWFC) testbed.",

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note = "Funding Information: This work was supported (in part) by NSF MRI Award #1625441 Development of a Visible Wavelength Extreme Publisher Copyright: {\textcopyright} 2018 SPIE.; Adaptive Optics Systems VI 2018 ; Conference date: 10-06-2018 Through 15-06-2018",

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AB - The MagAO-X instrument is an upgrade of the Magellan AO system that will introduce extreme adaptive optics capabilities for high-contrast imaging at visible and near-infrared wavelengths. A central component of this system is a 2040-actuator microelectromechanical (MEMS) deformable mirror (DM) from Boston Micromachines Corp. (BMC) that will operate at 3.63 kHz for high-order wavefront control. Two additional DMs from ALPAO will perform low-order and non-common-path science-arm wavefront correction. The accuracy of the wavefront correction is limited by our ability to command these DMs to a desired shape, which requires a careful characterization of each DM surface. We have developed a characterization pipeline that uses a Zygo Verifire Interferometer to measure the surface response and a Karhunen-Loeve transform to remove noise from our measurements. We present our progress in the characterization process and the results of our pipeline applied to an ALPAO DM97 and a BMC Kilo-DM, demonstrating the ability to drive the DMs to a flat of ≤2nm and ≤4nm RMS in our beam footprint on the University of Arizona Wavefront Control (UAWFC) testbed.

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Characterization of deformable mirrors for the MagAO-X project

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Keywords

ASJC Scopus subject areas

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