Laser Speckle Reducers
Edmund Optics has introduced Laser Speckle Reducers. These versatile devices are ideal for a wide variety of beam homogenisation, 3D scanning, metrology, microscopy and interferometry applications.
The Laser Speckle Reducers remove local interferences and greatly reduce speckle noise in laser systems. This is achieved by dynamically diffusing the laser beam. Diffusing angles of 1°, 10° and 20° are offered, providing maximum versatility for a wide range of uses. Laser Speckle Reducers are compact for ease of handling and integration. They feature integrated drive electronics and provide vibration-less speckle reduction.
The devices utilise four electro-optic polymers, which selectively move each Reducer's central diffuser along the X and Y axis to form a circular pattern of motion. As a result, the laser speckle pattern is adjusted to appear as a uniform distribution of light. To take advantage of maximum laser speckle reduction, the user would position the device perpendicular to the laser beam and use a collimated laser source with beam diameter equivalent to the Reducer's clear aperture.
The devices are USB powered for convenience and ease of use. They are offered in models with either a 5mm or 10mm clear aperture and with diffusion angles of 1°, 10° or 20°.