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首页> 外文期刊>Applied optics >ROOM-TEMPERATURE TESTS OF AN OPTICAL TRANSDUCER FOR RESONANT GRAVITATIONAL WAVE DETECTORS
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ROOM-TEMPERATURE TESTS OF AN OPTICAL TRANSDUCER FOR RESONANT GRAVITATIONAL WAVE DETECTORS

机译：谐振重力波探测器的光学传感器的室温测试

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A two-oscillator transducer incorporating a laser-illuminated Fabry-Perot cavity with a finesse of 77,500 and a power dissipation of 1.2 mu W was tested at room temperature. The energy of the last resonator with a mass of 1.25 g was measured to be k(B)T within 8%, and no back action from the sensor could be detected. The lowest value of the noise measured away from resonance was 1.0 x 10(-15) m/root Hz, and the electronic noise was 3.2 x 10(-17) m/root Hz. That transducer is designed for a 2400-kg gravitational wave antenna operating at cryogenic temperatures. At 4.2 K and for mechanical quality factors of 3 x 10(6), the measured thermal and electronic noise levels would translate into a sensitivity in h equal to 7.0 x 10(-19) and 1.5 x 10(-19), respectively. [References: 24]
机译：在室温下测试了一个两振荡器换能器，该换能器装有一个激光照明的Fabry-Perot腔，其精细度为77,500，功耗为1.2μW。质量为1.25 g的最后一个谐振器的能量经测量为k（B）T在8％之内，并且无法检测到传感器的反作用。远离共振测得的最低噪声值为1.0 x 10（-15）m /根Hz，电子噪声为3.2 x 10（-17）m /根Hz。该传感器是为在低温下工作的2400 kg重力波天线设计的。在4.2 K且机械品质因数为3 x 10（6）时，测得的热噪声和电子噪声水平将转化为h的灵敏度，分别等于7.0 x 10（-19）和1.5 x 10（-19）。 [参考：24]

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