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Measuring the Power and Wavelength of Pulsed Sources Using the OMM-6810B Optical Multimeter

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Measuring the Power and Wavelength of Pulsed Sources Using the OMM-6810B Optical Multimeter

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This Technical Note presents the experimental results showing how the OMM-6810B Optical Multimeter coupled to a power and wavelength measurement head will respond to a pulsed laser.The OMM-6810B coupled to an OMH-6722B Silicon Power/WaveHead was set up as shown in Figure 1. A Helium Neon gas laser (632.8 nm) was pulsed using a mechanical chopper. For each setting of the chopper wheel, the computer would take 100 wavelength and power readings over a 20 second period. The maximum change in the wavelength and power readings was determined and recorded for this period. The OMM-6810B was put into fast, medium and slow update rates. The gain range of the 6810B was manually selected.

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