The velocity sensitivity of resonant scattering spectrometers employing a piezoelastic modulator
The velocity sensitivity of resonant scattering spectrometers employing a piezoelastic modulator
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采用压电弹性调制器的共振散射光谱仪的速度灵敏度
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
P. Hoyng
中科院分区：
文献类型：
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作者：
P. Hoyng
用于测量全盘太阳速度振荡的 IRIS 地面网络的共振散射光谱仪利用了压电弹性调制器。分析该光学元件产生的速度噪声，特别强调振荡幅度 a 所需的稳定性。绝对稳定性ψ a − amψ/am 和相对稳定性δar.m.s./am 的乘积可能不大于10 -4 至10 -5 (取决于具体意愿)，其中ams 为最佳幅度。光子统计导致的速度噪声略有增强，但速度噪声的其他仪器源保持不受影响。
The resonant scattering spectrometers of the IRIS ground-based network for measuring whole-disc solar velocity oscillations make use of a piezoelastic modulator. The velocity noise generated by this optical component is analysed with particular emphasis on the required stability of the amplitude of oscillation, a. The product of the absolute stability ¦ a − am¦/amand the relative stability δar.m.s./am may not be larger than 10 −4 to 10 −5 (depending on specific wishes), where amis the optimum amplitude. The velocity noise due to photon statistics is slightly enhanced, but other instrumental sources of velocity noise remain unaffected.