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PSD
位置分辨率如何？
这取决于具体产品。详见数据单。位置分辨率随光量、电极间电阻和电阻长度而变化。
电极间电阻大会产生哪些影响？
位置分辨率提高。但由于饱和电流变低，因此容易出现饱和现象。响应速度也会降低。
电极间电阻与位置分辨率有何关系？
位置分辨率由“（噪声电流/信号光电流） × 电阻长度”定义。电极间电阻越大，噪声电流越小。因此，电极间电阻越大，位置分辨率越好。
入射光量与位置分辨率有何关系？
位置分辨率由“（噪声电流/信号光电流） × 电阻长度”定义。信号光电流与入射光量成正比，因此入射光量越大，位置分辨率越好。但是，入射光量过高会导致饱和现象，因此入射光量必须设置在不会导致 PSD 饱和的范围内。
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