Optical trapping and cooling of high-aspect-ratio hexagonal prisms for kHz gravitational wave detection
ORAL
Abstract
We present an update on the optical trapping and cooling of high-aspect-ratio Yb:beta-NaYF hexagonal prisms in vacuum for the Levitated Sensor Detector (LSD) project, which detects high-frequency (10-300 kHz) gravitational waves. By making use of this high mass, low photon-recoil-heating geometry in the LSD, we could achieve its designed sensitivity for probing sources like superradiance from axion clouds around spinning black holes and primordial black hole mergers. We discuss the recent progress of cooling the motional temperature of hexagons using parametric feedback cooling, as well as the LSD 1-meter prototype that is in construction.
*This work was partially supported by the W.M. Keck foundation, the office of Naval Research grant no.417315//N00014-18-1-2370, the National Science Foundation, and the Heising-Simons Foundation.
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Publication: G. Winstone, Z. Wang, S. Klomp, R. G. Felsted, A. Laeuger, C. Gupta, D. Grass, N. Aggarwal, J. Sprague, P. J. Pauzauskie, S. L. Larson, V. Kalogera, A. A. Geraci (LSD Collaboration), Optical Trapping of High-Aspect-Ratio NaYF Hexagonal Prisms for kHz-MHz Gravita- tional Wave Detectors, Phys. Rev. Lett. 129 (2022) 053604.
Presenters
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Zhiyuan Wang
- Northwestern University