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229Th-doped nonlinear optical crystals for compact solid-state clocks

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arxiv 2410.23364 v1 pith:4NU3IAYZ submitted 2024-10-30 physics.optics physics.atom-ph

H. W. T. Morgan , R. Elwell , J. E. S. Terhune , H. B. Tran Tan , U. C. Perera , A. Derevianko , A. N. Alexandrova , E. R. Hudson This is my paper · ORCID
classification physics.opticsphysics.atom-ph
keywords clocklaseropticalsolid-statecrystalsnonlinearoperationth-doped
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The recent laser excitation of the 229Th isomeric transition in a solid-state host opens the door for a portable solid-state nuclear optical clock. However, at present the vacuum-ultraviolet laser systems required for clock operation are not conducive to a fieldable form factor. Here, we propose a possible solution to this problem by using 229Th-doped nonlinear optical crystals, which would allow clock operation without a vacuum-ultraviolet laser system and without the need of maintaining the crystal under vacuum.

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