| Autor: |
Matthew Weaver, Petro Sonin, Kier Heeck, F. M. Buters, Dirk Bouwmeester, H. J. Eerkens, S. de Man, Brian Pepper |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
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| Popis: |
In a Fabry–Perot cavity optomechanical system the mechanical mode can be excited by placing the laser at the blue sideband of the cavity resonance. As soon as the optical driving force overcomes the mechanical losses, self-induced oscillations start to occur. When trying to achieve large parametric amplification in most experiments these self-induced oscillations cross over into chaotic motion due to secondary effects such as heating of the mirror by optical absorption. Here we demonstrate an optomechanical system in which the amplitude of mechanical mode can be greatly amplified due to the use of a low-absorption Bragg mirror on the mechanical oscillator. By scanning the laser across the optical cavity resonance and analyzing the optical output, we demonstrate that we can amplify the mechanical mode to an amplitude 450 times larger than the thermal amplitude at 300 K, without any appearance of unstable or chaotic motion. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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