Related Experiment Video
Updated: May 12, 2026
09:10
Fabrication and Testing of Microfluidic Optomechanical Oscillators
Published on: May 29, 2014
Diamond-integrated optomechanical circuits
Patrik Rath1, Svetlana Khasminskaya, Christoph Nebel
1Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
Nature Communications
|April 12, 2013
Summary
Researchers engineered diamond-based optomechanical circuits for advanced sensing and signal processing. These novel photonic circuits leverage diamond
Area of Science:
- Optomechanics
- Nanophotonics
- Materials Science
Background:
- Diamond's unique properties (high Young's modulus, thermal stability, wide bandgap) are ideal for micro- and nanomechanical resonators and integrated optics.
- Silicon photonics faces limitations due to free-carrier absorption, which diamond avoids.
- Polycrystalline diamond films offer a scalable substrate for high-quality nanophotonic devices.
Purpose of the Study:
- To engineer full-scale optomechanical circuits in diamond thin films.
- To demonstrate efficient optomechanical transduction using diamond nanomechanical resonators.
- To explore diamond's potential for low-cost, wideband, carrier-free photonic circuits.
Main Methods:
- Fabrication of polycrystalline diamond films using chemical vapour deposition.
- Integration of free-standing nanomechanical resonators within on-chip Mach-Zehnder interferometers.
- Utilizing gradient optical forces for optomechanical transduction.
Main Results:
- Demonstrated efficient optomechanical transduction in diamond-based circuits.
- Achieved high mechanical quality factors in fabricated diamond resonators (up to 11,200).
- Developed wafer-scale fabrication of nanophotonic devices on diamond.
Conclusions:
- Diamond thin films are a promising platform for realizing high-performance optomechanical circuits.
- These circuits offer advantages for all-optical sensing and ultra-high frequency signal processing.
- The developed technology provides a low-cost, wideband, and carrier-free alternative to silicon photonics.
