Performance of large-format deformable mirrors constructed with hybrid variable reluctance actuators II: initial lab results from FLASH

Rachel Bowens-Rubin; Philip Hinz; Stefan Kuiper; Daren Dillon

doi:10.1117/12.2593535

1 September 2021 Performance of large-format deformable mirrors constructed with hybrid variable reluctance actuators II: initial lab results from FLASH

Rachel Bowens-Rubin, Philip Hinz, Stefan Kuiper, Daren Dillon

Author Affiliations +

Proceedings Volume 11823, Techniques and Instrumentation for Detection of Exoplanets X; 118231R (2021) https://doi.org/10.1117/12.2593535
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Conference Poster

Abstract

Advancements in high-efficiency variable reluctance actuators are an enabling technology for building the next generation of large-format deformable mirrors, including adaptive secondary mirrors. The Netherlands Organization for Applied Scientific Research (TNO) has developed a new style of hybrid variable-reluctance actuator that requires approximately seventy-five times less power to operate as compared to the traditional style of voice-coil actuators. We present the initial performance results from laboratory testing of TNO's latest 19-actuator prototype mirror, FLASH. We report the linearity, hysteresis, natural shape flattening, actuator cross-coupling, creep, and repeatability of the FLASH prototype and compare the results to previous TNO prototype deformable mirrors. We also present results of the performance of FLASH on sub-millisecond timescales in order to estimate the limits for the use of this technology when utilized to perform high-contrast imaging adaptive optics.

Citation Download Citation

Rachel Bowens-Rubin, Philip Hinz, Stefan Kuiper, and Daren Dillon "Performance of large-format deformable mirrors constructed with hybrid variable reluctance actuators II: initial lab results from FLASH", Proc. SPIE 11823, Techniques and Instrumentation for Detection of Exoplanets X, 118231R (1 September 2021); https://doi.org/10.1117/12.2593535

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