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

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/5.0061778· OSTI ID:1978948
 [1];  [2];  [2];  [2];  [3];  [4];  [5];  [4];  [2]
  1. Harvard University, Cambridge, MA (United States); Harvard Univ., Cambridge, MA (United States)
  2. Harvard University, Cambridge, MA (United States)
  3. Harvard University, Cambridge, MA (United States); California Institute of Technology (CalTech), Pasadena, CA (United States)
  4. University of Melbourne, VIC (Australia)
  5. University of Melbourne, VIC (Australia); RMIT University, Melbourne, VIC (Australia)
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.
Research Organization:
California Institute of Technology (CalTech), Pasadena, CA (United States); Harvard University, Cambridge, MA (United States)
Sponsoring Organization:
Air Force; Air Force Office of Scientific Research (AFOSR); Army Research Office (ARO); Australian Research Council; Japan Society for the Promotion of Science (JSPS); National Science Foundation (NSF); Natural Sciences and Engineering Research Council of Canada (NSERC); Office of Naval Research (ONR); USDOE Office of Science (SC)
Grant/Contract Number:
SC0020376
OSTI ID:
1978948
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 17 Vol. 119; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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