Optically driven nanomechanical resonators could become nonvolatile memory devices

yale_nanomechanical

(Image: Yale University)


New Haven, CT--Nanoscale optomechanical resonators developed by engineers at the Yale School of Engineering and Applied Science operate at much higher amplitudes than previously thought.1 The slightly buckled resonators, cooled to their quantum ground states (an achievement in itself), take one of two stable buckled configurations; the coupling to an optical cavity generates enough phonons (mechanical waves akin to sound waves) to overcome the energy barrier and flip the resonators to their other state.

Such manipulations allow the Yale researchers to observe evidence for theoretical predictions, such as nanomechanical "slow-downs" and a zero-frequency singularity (oddity). Able to be flipped from one state to the other, the device also has potential to serve as a nonvolatile nano-optomechanical memory. Oscillation amplitudes are in the hundreds of nanometers, and frequencies are in the megahertz range.

The operating principle is similar to laser cooling techniques used in atomic physics. “One can control the motion of a mechanical structure, amplify or cool its vibrations, just by controlling the wavelength of laser light,” said Mahmood Bagheri, one of the researchers.

Among other benefits, optomechanical memory devices can withstand harsher environments than electronic or magnetic memory devices without losing data. Future technologies containing similar high-amplitude optomechanical resonators might be less sensitive to environmental conditions, such as variations in temperature and radiation. At the same time, high-amplitude resonators might enable more accurate and robust measuring devices.



REFERENCE:

1. Mahmood Bagheri et al., Nature Nanotechnology (2011); published online 23 October 2011; doi:10.1038/nnano.2011.180.





Most Popular Articles

Webcasts

Femtosecond Lasers – Getting the Photons to the Work Area

Ultrashort-pulse lasers, both picosecond and femtosecond, are now available from a large number of manufacturers, with new players entering the field at a ra...

Ray Optics Simulations with COMSOL Multiphysics

The Ray Optics Module can be used to simulate electromagnetic wave propagation when the wavelength is much smaller than the smallest geometric entity in the ...

Multichannel Spectroscopy: Technology and Applications

This webcast, sponsored by Hamamatsu, highlights some of the photonic technology used in spectroscopy, and the resulting applications.

Handheld Spectrometers

Spectroscopy is a powerful and versatile tool that traditionally often required a large and bulky instrument. The combination of compact optics and modern pa...

Opportunities in the Mid-IR

The technology for exploiting the mid-IR is developing rapidly:  it includes quantum-cascade lasers and other sources, spectroscopic instruments of many...
White Papers

Accurate LED Source Modeling Using TracePro

Modern optical modeling programs allow product design engineers to create, analyze, and optimize ...

Miniature Spectrometers for Narrowband Laser Characterization

In less than 60 years, lasers have transformed from the imagined “ray gun” of science fiction int...

Improve Laser Diode Performance by Reducing Output Cable Inductance using Twisted Pair Cable

The intent of this article is to provide information regarding the performance of twisted pair ca...
Technical Digests

OPTICAL COATINGS: Evolving technology produces new benefits

The antireflection, high-reflection, and/or spectral characteristics provided by optical coatings...

REMOTE FIBER-OPTIC SENSING: Data in abundance from difficult environments

The use of optical fibers to measure strain, temperature, and other parameters at desired points ...

SCANNERS FOR MATERIALS PROCESSING: Serving demanding applications

Galvanometer-based scanners are an essential component in laser-based materials-processing system...

Click here to have your products listed in the Laser Focus World Buyers Guide.

PRESS RELEASES

SCHOTT and Applied Microarrays Establish Distribution Partnership for NEXTERION® Products

01/22/2013 SCHOTT and Applied Microarrays, Inc. have established a partnership for the distribution of SCHOT...

SCHOTT North America and Space Photonics, Inc. Sign Exclusive Licensing Agreement for Covert Communications Technology

01/22/2013 WASHINGTON, D.C.—October 18, 2012—Space Photonics Inc. and SCHOTT North America, Inc. today annou...
Social Activity
  •  
  •  
  •  
  •  
Copyright © 2007-2015. PennWell Corporation, Tulsa, OK. All Rights Reserved.PRIVACY POLICY | TERMS AND CONDITIONS