Hexagonal Boron Nitride Cavity Optomechanics
| Autor: | Prasoon K. Shandilya, Johannes E. Fröch, Matthew Mitchell, David P. Lake, Sejeong Kim, Milos Toth, Bishnupada Behera, Chris Healey, Igor Aharonovich, Paul E. Barclay |
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| Rok vydání: | 2019 |
| Předmět: |
Condensed Matter - Mesoscale and Nanoscale Physics
Mechanical Engineering FOS: Physical sciences Bioengineering General Chemistry 02 engineering and technology Condensed Matter Physics 021001 nanoscience & nanotechnology 01 natural sciences 7. Clean energy 010305 fluids & plasmas Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences General Materials Science Nanoscience & Nanotechnology 010306 general physics 0210 nano-technology Physics - Optics Optics (physics.optics) |
| Zdroj: | Nano letters. 19(2) |
| ISSN: | 1530-6992 |
| Popis: | 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 predicted thickness between 8 nm and 51 nm were fabricated using electron beam induced etching and positioned in the optical nearfield of silicon microdisk cavities. A 160 fm/$\sqrt{\text{Hz}}$ sensitivity to the hBN nanobeam motion is demonstrated, allowing observation of thermally driven mechanical resonances with frequencies between 1 and 23 MHz, and mechanical quality factors reaching 1100 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 towards realizing integrated optomechanical circuits employing hBN. Comment: Revised version |
| Databáze: | OpenAIRE |
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