Non-linear mixing in coupled photonic crystal nanobeam cavities due to cross-coupling opto-mechanical mechanisms
Abstract
We investigate the coupling between mechanical and optical modes supported by coupled, freestanding, photonic crystal nanobeam cavities. We show that localized cavity modes for a given gap between the nanobeams provide weak optomechanical coupling with out-of-plane mechanical modes. However, we show that the coupling can be significantly increased, more than an order of magnitude for the symmetric mechanical mode, due to optical resonances that arise from the interaction of the localized cavity modes with standing waves formed by the reflection from thesubstrate. Finally, amplification of motion for the symmetric mode has been observed and attributed to the strong optomechanical interaction of our hybrid system. The amplitude of these self-sustained oscillations is large enough to put the system into a non-linear oscillation regime where a mixing between the mechanical modes is experimentally observed and theoretically explained.
- Authors:
-
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States)
- Publication Date:
- OSTI Identifier:
- 22391898
- Resource Type:
- Journal Article
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 105; Journal Issue: 18; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMPLIFICATION; CAVITY RESONATORS; CRYSTALS; HYBRID SYSTEMS; NANOSTRUCTURES; NONLINEAR PROBLEMS; OPTICAL MODES; OSCILLATIONS; STANDING WAVES; SYMMETRY
Citation Formats
Ramos, Daniel, Frank, Ian W., Deotare, Parag B., Bulu, Irfan, and Lončar, Marko. Non-linear mixing in coupled photonic crystal nanobeam cavities due to cross-coupling opto-mechanical mechanisms. United States: N. p., 2014.
Web. doi:10.1063/1.4901441.
Ramos, Daniel, Frank, Ian W., Deotare, Parag B., Bulu, Irfan, & Lončar, Marko. Non-linear mixing in coupled photonic crystal nanobeam cavities due to cross-coupling opto-mechanical mechanisms. United States. https://doi.org/10.1063/1.4901441
Ramos, Daniel, Frank, Ian W., Deotare, Parag B., Bulu, Irfan, and Lončar, Marko. 2014.
"Non-linear mixing in coupled photonic crystal nanobeam cavities due to cross-coupling opto-mechanical mechanisms". United States. https://doi.org/10.1063/1.4901441.
@article{osti_22391898,
title = {Non-linear mixing in coupled photonic crystal nanobeam cavities due to cross-coupling opto-mechanical mechanisms},
author = {Ramos, Daniel and Frank, Ian W. and Deotare, Parag B. and Bulu, Irfan and Lončar, Marko},
abstractNote = {We investigate the coupling between mechanical and optical modes supported by coupled, freestanding, photonic crystal nanobeam cavities. We show that localized cavity modes for a given gap between the nanobeams provide weak optomechanical coupling with out-of-plane mechanical modes. However, we show that the coupling can be significantly increased, more than an order of magnitude for the symmetric mechanical mode, due to optical resonances that arise from the interaction of the localized cavity modes with standing waves formed by the reflection from thesubstrate. Finally, amplification of motion for the symmetric mode has been observed and attributed to the strong optomechanical interaction of our hybrid system. The amplitude of these self-sustained oscillations is large enough to put the system into a non-linear oscillation regime where a mixing between the mechanical modes is experimentally observed and theoretically explained.},
doi = {10.1063/1.4901441},
url = {https://www.osti.gov/biblio/22391898},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 18,
volume = 105,
place = {United States},
year = {Mon Nov 03 00:00:00 EST 2014},
month = {Mon Nov 03 00:00:00 EST 2014}
}