Recent content by chwn
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Undergrad How to measure the Intensity of Light?
Originally Posted by chwn A laser light going through an optic fiber, then with a focal lens, it is focused on a target. The focused light spot is about 0.2 mm. Can I achieve the best focus by measuring the focused light spot intensity with a photodiodes and judge the best focus based on its... -
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Undergrad How to measure the Intensity of Light?
A laser light going through a optic fiber, then with a focal lens, it is focused on a target. The focused light spot is about 0.2 mm. Can I achieve the best focus by measuring the focused light spot intensity with a photodiodes and judge the best focus based on its output current or voltage reading?