Hexagonal Boron Nitride Cavity Optomechanics

Shandilya, PK; Fröch, JE; Mitchell, M; Lake, DP; Kim, S; Toth, M; Behera, B; Healey, C; Aharonovich, I; Barclay, PE

Hexagonal Boron Nitride Cavity Optomechanics

Shandilya, PK Fröch, JE Mitchell, M Lake, DP Kim, S

Toth, M

Behera, B Healey, C Aharonovich, I

Barclay, PE

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Publication Type:: Journal Article
Citation:: Nano Letters, 2019
Issue Date:: 2019-01-01

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Field	Value	Language
dc.contributor.author	Shandilya, PK	en_US
dc.contributor.author	Fröch, JE	en_US
dc.contributor.author	Mitchell, M	en_US
dc.contributor.author	Lake, DP	en_US
dc.contributor.author	Kim, S https://orcid.org/0000-0001-9836-3608	en_US
dc.contributor.author	Toth, M https://orcid.org/0000-0003-1564-4899	en_US
dc.contributor.author	Behera, B	en_US
dc.contributor.author	Healey, C	en_US
dc.contributor.author	Aharonovich, I https://orcid.org/0000-0003-4304-3935	en_US
dc.contributor.author	Barclay, PE	en_US
dc.date.issued	2019-01-01	en_US
dc.identifier.citation	Nano Letters, 2019	en_US
dc.identifier.issn	1530-6984	en_US
dc.identifier.uri	http://hdl.handle.net/10453/134220
dc.description.abstract	Copyright © 2019 American Chemical Society. Hexagonal boron nitride (hBN) is an emerging layered material that plays a key role in a variety of two-dimensional devices, and has potential applications in nanophotonics and nanomechanics. Here, we demonstrate the first cavity optomechanical system incorporating hBN. Nanomechanical resonators consisting of hBN beams with average dimensions of 12 μm × 1.2 μm × 28 nm and minimum predicted thickness of 8 nm were fabricated using electron beam induced etching and positioned in the optical near-field of silicon microdisk cavities. Of the multiple devices studied here a maximum 0.16 pm/Hz sensitivity to the hBN nanobeam motion is demonstrated, allowing observation of thermally driven mechanical resonances with frequencies between 1 and 23 MHz, and largest mechanical quality factor of 1100 for a 23 MHz mode, at room temperature in high vacuum. In addition, the role of air damping is studied via pressure dependent measurements. Our results constitute an important step toward realizing integrated optomechanical circuits employing hBN.	en_US
dc.relation	http://purl.org/au-research/grants/arc/DP180100077
dc.relation	http://purl.org/au-research/grants/arc/LP170100150
dc.relation.ispartof	Nano Letters	en_US
dc.relation.isbasedon	10.1021/acs.nanolett.8b04956	en_US
dc.subject.classification	Nanoscience & Nanotechnology	en_US
dc.title	Hexagonal Boron Nitride Cavity Optomechanics	en_US
dc.type	Journal Article
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
utslib.for	1007 Nanotechnology	en_US
utslib.for	020504 Photonics, Optoelectronics and Optical Communications	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - IBMD - Initiative for Biomedical Devices
pubs.organisational-group	/University of Technology Sydney/Strength - MTEE - Research Centre Materials and Technology for Energy Efficiency
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US

Abstract:

Copyright © 2019 American Chemical Society. Hexagonal boron nitride (hBN) is an emerging layered material that plays a key role in a variety of two-dimensional devices, and has potential applications in nanophotonics and nanomechanics. Here, we demonstrate the first cavity optomechanical system incorporating hBN. Nanomechanical resonators consisting of hBN beams with average dimensions of 12 μm × 1.2 μm × 28 nm and minimum predicted thickness of 8 nm were fabricated using electron beam induced etching and positioned in the optical near-field of silicon microdisk cavities. Of the multiple devices studied here a maximum 0.16 pm/Hz sensitivity to the hBN nanobeam motion is demonstrated, allowing observation of thermally driven mechanical resonances with frequencies between 1 and 23 MHz, and largest mechanical quality factor of 1100 for a 23 MHz mode, at room temperature in high vacuum. In addition, the role of air damping is studied via pressure dependent measurements. Our results constitute an important step toward realizing integrated optomechanical circuits employing hBN.

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http://hdl.handle.net/10453/134220