Acousto-optic tunable filters improve optical microscopy

The acousto-optic tunable filter is playing an increasingly important role in modern optical microscopy. In the latest-generation laser-scanning confocal microscopes, these devices modulate both the wavelength and amplitude of the laser light used as the illumination beam.

Used with a laser-scanning confocal microscope, an acousto-optic tunable filter selects wavelengths and specific field regions for illumination.

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