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  • Received: Jul. 12, 2019

    Accepted: Dec. 26, 2019

    Posted: Jan. 3, 2020

    Published Online: Feb. 14, 2020

    The Author Email: Michael J. Strain (michael.strain@strath.ac.uk)

    DOI: 10.1364/PRJ.372358

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    Paul Hill, Charalambos Klitis, Benoit Guilhabert, Marc Sorel, Erdan Gu, Martin D. Dawson, Michael J. Strain. All-optical tuning of a diamond micro-disk resonator on silicon[J]. Photonics Research, 2020, 8(3): 03000318

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Photonics Research, Vol. 8, Issue 3, 03000318 (2020)

All-optical tuning of a diamond micro-disk resonator on silicon

Paul Hill1,2, Charalambos Klitis3, Benoit Guilhabert1, Marc Sorel3, Erdan Gu1, Martin D. Dawson1, and Michael J. Strain1,*

Author Affiliations

  • 1Institute of Photonics, Department of Physics, Technology and Innovation Centre, University of Strathclyde, Glasgow G1 1RD, UK
  • 2Diamond Science and Technology, Centre for Doctoral Training, University of Warwick, Coventry CV4 7AL, UK
  • 3School of Engineering, University of Glasgow, Glasgow G12 8LT, UK

Abstract

High-quality integrated diamond photonic devices have previously been demonstrated in applications from non-linear photonics to on-chip quantum optics. However, the small sample sizes of single crystal material available, and the difficulty in tuning its optical properties, are barriers to the scaling of these technologies. Both of these issues can be addressed by integrating micrometer-scale diamond devices onto host photonic integrated circuits using a highly accurate micro-assembly method. In this work a diamond micro-disk resonator is integrated with a standard single-mode silicon-on-insulator waveguide, exhibiting an average loaded Q-factor of 3.1×104 across a range of spatial modes, with a maximum loaded Q-factor of 1.05×105. The micrometer-scale device size and high thermal impedance of the silica interface layer allow for significant thermal loading and continuous resonant wavelength tuning across a 450 pm range using a milliwatt-level optical pump. This diamond-on-demand integration technique paves the way for tunable devices coupled across large-scale photonic circuits.