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Is your laser’s focus spot where you think it is? This video shows the focal shift of a 100 kW laser during the first four seconds of startup using BeamWatch, Ophir-Spiricon’s non-contact high power beam analyzer. Find out more here: https://www.ophiropt.com/laser–measurement/beam-profilers/products/High-Power-Beam-Profiling/BeamWatch

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Sometimes a laser is used in a “pass-through” setup, which begs the question: What happens to the laser after it passes through?

Consider for example a sensitive camera that is used to profile a laser. Beam splitters are often used to deflect only a small percent of the laser intensity into the camera. The other 90% or more passes straight through the splitter.