Optical Chopper

Newport - New FocusRequest Info
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With a chopping frequency phase-locked to its own internal frequency synthesizer, the Model 3502 optical chopper from New Focus can chop from 4 HZ to 10.65 kHz.

The chopper features outputs at the sum and difference of the inner and outer wheel’s chopping frequencies for nonlinear-optics experiments, as well a high-stability phase shifter than can lock two choppers together for long fluorescence-decay measurements.

Replacing the 3501 chopper, Model 3502 can achieve variable duty-cycle chopping by mounting two of the same wheels on the chopper head.

Published: October 2014
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