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Earl Hergert
Hamamatsu Corporation
Articles
By Earl Hergert
May 2023
By the Numbers: Photon Counting and Number Resolution
Light transmits information about its emitter (source) and the medium of propagation. If this information is relevant, the light can be detected for analysis — and it has been detected with...
October 2018
Photodetectors in Flow Cytometers
Flow cytometry is a technique that can provide quantitative and qualitative information about biological cells and microparticles. The information is in the light that has interacted with the cells...
August 2017
Detectors: Options for Low-Light Applications
Developed in the early 1990s, the silicon photomultiplier (SiPM) is a solid-state photodetector whose sensitivity to light rivals that of a photomultiplier tube (PMT) in a regime where a few hundred...
June 2015
Selecting a Photodetector: Using WITS$ as a Rough Guide
Light is a versatile tool for investigating physical and chemical processes in nature. Any specific system being analyzed may, through the light it emits or reflects, communicate information about...
January 2015
Detectors: Guideposts on the Road to Selection
Any number of medical, industrial, and analytical applications requires the detection of light. Chemiluminescence, bioluminescence, fluorescence, and atomic absorption are just a few, and all require...
December 2025
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