Optically pumped parametric amplification for micromechanical oscillators

M. Zalalutdinov; A. Olkhovets; A. Zehnder; B. Ilic; D. Czaplewski; H. G. Craighead; J. M. Parpia

doi:10.1063/1.1371248

Optically pumped parametric amplification for micromechanical oscillators

M. Zalalutdinov, A. Olkhovets, A. Zehnder, B. Ilic, D. Czaplewski, H. G. Craighead, J. M. Parpia

Research output: Contribution to journal › Article › peer-review

108 Scopus citations

Abstract

Micromechanical oscillators in the rf range were fabricated in the form of silicon discs supported by a SiO₂ pillar at the disk center. A low-power laser beam, (P_laser∼100 μW), focused at the periphery of the disk, causes a significant change of the effective spring constant producing a frequency shift, Δf(Δf/f∼10^-4). The high quality factor, Q, of the disk oscillator (Q∼10⁴) allows us to realize parametric amplification of the disk's vibrations through a double frequency modulation of the laser power. An amplitude gain of up to 30 was demonstrated, with further increase limited by nonlinear behavior and self-generation. Phase dependence, inherent in degenerate parametric amplification, was also observed. Using this technique, the sensitivity of detection of a small force is greatly enhanced.

Original language	English (US)
Pages (from-to)	3142-3144
Number of pages	3
Journal	Applied Physics Letters
Volume	78
Issue number	20
DOIs	https://doi.org/10.1063/1.1371248
State	Published - May 14 2001

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.1371248

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abstract = "Micromechanical oscillators in the rf range were fabricated in the form of silicon discs supported by a SiO2 pillar at the disk center. A low-power laser beam, (Plaser∼100 μW), focused at the periphery of the disk, causes a significant change of the effective spring constant producing a frequency shift, Δf(Δf/f∼10-4). The high quality factor, Q, of the disk oscillator (Q∼104) allows us to realize parametric amplification of the disk's vibrations through a double frequency modulation of the laser power. An amplitude gain of up to 30 was demonstrated, with further increase limited by nonlinear behavior and self-generation. Phase dependence, inherent in degenerate parametric amplification, was also observed. Using this technique, the sensitivity of detection of a small force is greatly enhanced.",

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AU - Zalalutdinov, M.

AU - Olkhovets, A.

AU - Zehnder, A.

AU - Ilic, B.

AU - Czaplewski, D.

AU - Craighead, H. G.

AU - Parpia, J. M.

PY - 2001/5/14

Y1 - 2001/5/14

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AB - Micromechanical oscillators in the rf range were fabricated in the form of silicon discs supported by a SiO2 pillar at the disk center. A low-power laser beam, (Plaser∼100 μW), focused at the periphery of the disk, causes a significant change of the effective spring constant producing a frequency shift, Δf(Δf/f∼10-4). The high quality factor, Q, of the disk oscillator (Q∼104) allows us to realize parametric amplification of the disk's vibrations through a double frequency modulation of the laser power. An amplitude gain of up to 30 was demonstrated, with further increase limited by nonlinear behavior and self-generation. Phase dependence, inherent in degenerate parametric amplification, was also observed. Using this technique, the sensitivity of detection of a small force is greatly enhanced.

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Optically pumped parametric amplification for micromechanical oscillators

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