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arXiv · 2410.23364

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

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
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Abstract

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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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. 2024-10-30. 229Th-doped nonlinear optical crystals for compact solid-state clocks. https://arxiv.org/abs/2410.23364

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