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前言极微弱光的检测技术在近代科学技术研究领域里受到广泛的重视,例如高分辨率的喇曼散射、生物发光、天文分光、原子吸收分光光度检测以及其它非线性光学测量等,分别要求检测输出功率微弱至每秒仅只有数个光子(10~(-19)瓦左右)的光信息,或者同属于微弱光检测范畴的另一种形式,它是以高强度的光入射状态下,检测出调制度为10~(-5)～10~(-6)的极微弱强度的调制信号。检测极微弱光的检测器,通常都使用光电倍增管,它比其它的器件,除了有光电变换机能之外,还具备有宽频带、高增益、低噪声的倍增系统,以及易于进行数据处理等特点,由于光电倍增管具有这种近于理想放大器的倍增系统,使它在现代电子线路里占有非常优越地位。
Preface The faint light detection technology in modern science and technology research in the field of widespread attention, such as high-resolution Raman scattering, bioluminescence, astronomical spectroscopy, atomic absorption spectrometry and other non-linear optical measurements, respectively, require testing Light output power of only a few photons per second (10 ~ (-19) watts or so) light information, or belonging to the same category of weak light detection another form, which is under high-intensity light incident detection Modulation of the very weak signal modulation system is 10 ~ (-5) ~ 10 ~ (-6). Detection of very weak light detectors, usually using photomultiplier tube, than its other devices, in addition to the photoelectric conversion function, but also has a wideband, high gain, low noise multiplication system, and easy data processing Features, due to the PMT with this close to the ideal amplifier multiplication system, it occupies a very superior position in the modern electronic circuits.