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Radiation pressure excitation and cooling of a cryogenic micro-mechanical systems cavity
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10.1063/1.3160317
/content/aip/journal/jap/106/1/10.1063/1.3160317
http://aip.metastore.ingenta.com/content/aip/journal/jap/106/1/10.1063/1.3160317
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Scheme of the experimental apparatus. O.I.: optical isolator; AOM: acousto-optic modulator; EOM: electro-optic modulator; H: half-wave plate; Q: quarter-wave plate; PD: photodiode; PBS: polarizing beam splitter; BS: beam splitter. The inset shows a drawing of the sample and cavity mirror holder: on the top, the translating stage holding the input mirror; the Si wafer with the MEMS is fixed from the bottom side of the device.

Image of FIG. 2.
FIG. 2.

Optomechanical characterization of the fundamental mode of the MEMS membrane at room temperature. (a) Amplitude of the mechanical response of the cavity length to a modulation of the intracavity power. (b) Phase portrait given by the quadratures of the response. (c) Spectral density of the cavity length fluctuations. The thin solid lines show the corresponding fit with Eq. (1) for the response and Eq. (2) for the spectrum.

Image of FIG. 3.
FIG. 3.

The same as in Fig. 2 for the second mode of the membrane.

Image of FIG. 4.
FIG. 4.

Optomechanical characterization of the fundamental mode at cryogenic temperature (see the caption of Fig. 2 for the description).

Image of FIG. 5.
FIG. 5.

Spectral density of the displacement noise around the fundamental mode resonance for different values of the power of the pump laser that is used for active cooling. (a) Room temperature: from dark to light lines, the corresponding pump power values measured before the cavity are 0, 1.8 mW, 3.6 mW, 7.5 mW, and 13.3 mW. (b) Cryogenic temperature: from dark to light lines, the pump power values are 0, 0.9 mW, 1.3 mW, and 2.4 mW. In the inset: the corresponding behavior of the effective temperature.

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/content/aip/journal/jap/106/1/10.1063/1.3160317
2009-07-10
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Radiation pressure excitation and cooling of a cryogenic micro-mechanical systems cavity
http://aip.metastore.ingenta.com/content/aip/journal/jap/106/1/10.1063/1.3160317
10.1063/1.3160317
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