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Exoplanet imaging has thus far enabled studies of wide-orbit ($>$10 AU) giantplanet ($>$2 Jupiter masses) formation and giant planet atmospheres, withfuture 30 meter-class Extremely Large Telescopes (ELTs) needed to image andcharacterize terrestrial exoplanets. However, current state-of-the-artexoplanet imaging technologies placed on ELTs would still miss the contrastrequired for imaging Earth-mass habitable-zone exoplanets around low-mass starsby ~100x due to speckle noise--scattered starlight in the science image due toa combination of aberrations from the atmosphere after an adaptive optics (AO)correction and internal to the telescope and instrument. We have beendeveloping a focal plane wavefront sensing technology called the FastAtmospheric Self-coherent camera Technique (FAST) to address both of theseissues; in this work we present the first results of simultaneous first andsecond stage AO wavefront sensing and control with a Shack Hartmann wavefrontsensor (SHWFS) and FAST, respectively, using two common path deformablemirrors. We demonstrate this "multi-WFS single conjugate AO" real-time controlat up to 200 Hz loop speeds on the Santa Cruz Extreme AO Laboratory (SEAL)testbed, showing a promising potential for both FAST and similar high-speeddiffraction-limited second-stage wavefront sensing technologies to be deployedon current and future observatories, helping to remove speckle noise as themain limitation to ELT habitable exoplanet imaging.

First laboratory demonstration of real-time multi-wavefront sensor single conjugate adaptive optics