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首页> 外文期刊>Physica, B. Condensed Matter >Stability control of single bubble sonoluminescence light
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Stability control of single bubble sonoluminescence light

机译：单泡声致发光灯的稳定性控制

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A micron-sized water bubble can be held fixed in a glass flask using an ultrasonic pressure field, and can be made to emit picosecond pulses of light that contains all colors. This phenomenon is called single bubble sonoluminescence (SBSL). The late Prof. Julian Schwinger had put forth a possible cause for SBSL, and postulated that the SBSL light consisted of photons that are emitted in pairs. Prior to testing for Schwinger's idea of photon pairs, we conducted experiments to measure the intensity fluctuations in SBSL using single-photon counting. By controlling the relative phase between the drive and feedback signals, through a PC computer, a light-emitting water bubble in an acoustically resonant flask could be maintained, while the fluctuations in the single-photon counts were Limited to the square root of the number of detected photons. We demonstrate the possibility of maintaining a long-term stabilized sonoluminescence bubble, while simultaneously keeping the bubble light intensity at the level of single-photon sensitivity. Our results explicitly show that sonoluminescence light can be stabilized for experimental investigations that test for possible photon pairs from SBSL. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 11]
机译：可以使用超声波压力场将微米大小的水泡固定在玻璃烧瓶中，并使其发出包含所有颜色的皮秒脉冲光。这种现象称为单气泡声致发光（SBSL）。已故的朱利安·史温格（Julian Schwinger）教授提出了SBSL的可能原因，并假定SBSL的光由成对发射的光子组成。在测试Schwinger的光子对概念之前，我们进行了实验以使用单光子计数来测量SBSL中的强度波动。通过PC机控制驱动信号和反馈信号之间的相对相位，可以保持声共振瓶中的发光水泡，而单光子计数的波动仅限于数的平方根检测到的光子。我们证明了保持长期稳定的声致发光气泡的可能性，同时将气泡的光强度保持在单光子灵敏度水平。我们的结果明确表明，对于实验性研究，可以稳定声致发光光，以测试SBSL中可能的光子对。 （C）2000 Elsevier Science B.V.保留所有权利。 [参考：11]

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