Abstract
Inexpensive battery‐operated motors can be used for a variety of safe, fast, laser beam‐steering and modulation activities, a number of which have been developed as part of the Laser Applications in Science Education (LASE) Project at San Jose State University. Those described here will be a laser stroboscope using a spinning slotted disc; a circular scanning system using a tilted rotating mirror, for bar‐code reading, investigating the focusing properties of lenses, lens aberrations and beam profiles; and a rotating polarizing sheet.
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