Laser-induced phonon-phonon interactions in an on-chip silicon optomechanical crystal (Conference Presentation)

Rishi N. Patel; Wentao Jiang; Zhaoyou Wang; Jeff T. Hill; Christopher J. Sarabalis; Amir H. Safavi-Naeini

doi:10.1117/12.2253031

28 April 2017 Laser-induced phonon-phonon interactions in an on-chip silicon optomechanical crystal (Conference Presentation)

Rishi N. Patel, Wentao Jiang, Zhaoyou Wang, Jeff T. Hill, Christopher J. Sarabalis, Amir H. Safavi-Naeini

Author Affiliations +

Proceedings Volume 10112, Photonic and Phononic Properties of Engineered Nanostructures VII; 101121Z (2017) https://doi.org/10.1117/12.2253031
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

Multi-mode optomechanical systems have formed the basis of recent proposals and experiments, enabling optical frequency translation and hybridization of near-resonant mechanical modes. An important question is how to control the internal mechanical states of such systems using laser light. Such control enables engineering of effective nonlinearities for phonons, allowing phonon-phonon frequency translation, mechanical entanglement, and precision metrology. On-chip engineered nanostructures are particularly suitable for exploring multi-mode systems. Here, we consider a silicon nanobeam optomechanical crystal with two mechanical modes coupled to a common optical mode. Simulations of the phonon-phonon scattering parameters of the system suggest that large conversion efficiency can be obtained at cryogenic temperatures. We show that remarkably, phonon-phonon conversion efficiency near unity is achievable, even when the loss rate of the intermediate optical mode dominates all other rates in the system by several orders of magnitude. This counter-intuitive phenomenon is the result of a long-lived mechanical dark state of the system that arises in the optical pumping scheme being used. We experimentally demonstrate two GHz frequency mechanical modes, separated by nearly 300 MHz, coupled to a first-order common optical TE mode with vacuum coupling rates of nearly 500 kHz. By optically driving the optomechanical crystal with two tones separated by the mechanical difference frequency we present evidence for optically induced phonon-phonon interactions at room temperature. We will present results of measurements in a cryogenic environment, operating at 4 Kelvin demonstrating improved large phonon-phonon conversion efficiency.

Conference Presentation

Citation Download Citation

Rishi N. Patel, Wentao Jiang, Zhaoyou Wang, Jeff T. Hill, Christopher J. Sarabalis, and Amir H. Safavi-Naeini "Laser-induced phonon-phonon interactions in an on-chip silicon optomechanical crystal (Conference Presentation)", Proc. SPIE 10112, Photonic and Phononic Properties of Engineered Nanostructures VII, 101121Z (28 April 2017); https://doi.org/10.1117/12.2253031

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Crystals

Silicon

Cryogenics

Laser crystals

Semiconductor lasers

Nanostructures

Control systems

Show All Keywords

Keywords/Phrases

Search In:

Publication Years