Fabrication of (111)-Faced Single-Crystal Diamond Plates by Laser Nucleated Cleaving

Abstract

Single-crystal diamond plates with surfaces oriented in a (111) crystal plane are required for high-performance solid-state device platforms ranging from power electronics to quantum information processing architectures. However, producing plates with this orientation has proven challenging. In this paper, we demonstrate a method for reliably and precisely fabricating (111)-faced plates from commercially available, chemical-vapor-deposition-grown, type-IIa single-crystal diamond substrates with (100) faces. Our method uses a nanosecond-pulsed visible laser to nucleate and propagate a mechanical cleave in a chosen (111) crystal plane, resulting in faces as large as 3.0 mm$\times$0.3 mm with atomically flat surfaces, negligible miscut angles, and near zero kerf loss. We discuss the underlying physical mechanisms of the process along with potential improvements that will enable the production of millimeter-scale (111)-faced single-crystal diamond plates for a variety of emerging devices and applications.

11 pages, 10 figures, 2 tables

References in corpus (4)

• Quantitative characterization of surface topography using spectral analysis
• Diamond Nanophotonics
• Engineering shallow spins in diamond with nitrogen delta-doping
• Photonic nano-structures on (111) oriented diamond

Cited by in corpus (4)

• Spin Readout Techniques of the Nitrogen-Vacancy Center in Diamond
• Materials challenges for quantum technologies based on color centers in diamond
• A strongly interacting, two-dimensional, dipolar spin ensemble in (111)-oriented diamond
• Designing metasurface optical interfaces for solid-state qubits using many-body adjoint shape optimization