论文标题
部分可观测时空混沌系统的无模型预测
Quantum noise in a Fabry-Perot interferometer including the influence of diffraction loss of light
论文作者
论文摘要
DECI-HERTZ干涉仪重力观测站（DECIGO）旨在检测0.1至10 Hz之间的频率的引力波。在此频带中，最重要的科学目标之一是检测原始引力波。 Decigo计划使用带有光腔的空间干涉仪来提高其灵敏度。为了评估其敏感性，必须充分考虑激光光的衍射。衍射损失有两种：镜子外泄漏损失和高阶模式损失。这些作用在Fabry-Perot（FP）腔内的内部和外部进行了不同的处理。我们在FP腔具有相对较高的技巧和高阶模式的条件下估计它们。结果，我们发现效果可以表示是量子噪声方面的有效技巧的降低。该结果对于优化Decigo的设计很有用。该方法还适用于所有干涉仪中技巧相对较高且明显衍射损失的所有FP腔。
The DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) is designed to detect gravitational waves at frequencies between 0.1 and 10 Hz. In this frequency band, one of the most important science targets is the detection of primordial gravitational waves. DECIGO plans to use a space interferometer with optical cavities to increase its sensitivity. For evaluating its sensitivity, diffraction of the laser light has to be adequately considered. There are two kinds of diffraction loss: leakage loss outside the mirror and higher-order mode loss. These effects are treated differently inside and outside of the Fabry-Perot (FP) cavity. We estimated them under the conditions that the FP cavity has a relatively high finesse and the higher-order modes do not resonate. As a result, we found that the effects can be represented as a reduction of the effective finesse of the cavity with regard to quantum noise. This result is useful for optimization of the design of DECIGO. This method is also applicable to all FP cavities with a relatively high finesse and significant diffraction loss in any interferometer.
