Details

Autor(en) / Beteiligte

• Kuruma, Kazuhiro
• Piracha, Afaq Habib
• Renaud, Dylan
• Chia, Cleaven
• Sinclair, Neil
• Nadarajah, Athavan
• Stacey, Alastair
• Prawer, Steven
• Lončar, Marko

Titel

Telecommunication-wavelength two-dimensional photonic crystal cavities in a thin single-crystal diamond membrane

Ist Teil von

• Applied physics letters, 2021-10, Vol.119 (17)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2021

Quelle

American Institute of Physics (AIP) Journals

Beschreibungen/Notizen

• We demonstrate two-dimensional photonic crystal cavities operating at telecommunication wavelengths in a single-crystal diamond membrane. We use a high-optical-quality and thin (∼300 nm) diamond membrane, supported by a polycrystalline diamond frame, to realize fully suspended two-dimensional photonic crystal cavities with a high theoretical quality factor of ∼8 × 106 and a relatively small mode volume of ∼2(λ/n)3. The cavities are fabricated in the membrane using electron-beam lithography and vertical dry etching. We observe cavity resonances over a wide wavelength range spanning the telecommunication O- and S-bands (1360–1470 nm) with Q factors of up to ∼1800. Our method paves the way for on-chip diamond nanophotonic applications in the telecommunication-wavelength range.