Laser Interferometer

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  • Machine Positioning Uncertainty with Laser Interferometer Feedback
    The purpose of this discussion is to explain the major contributors to machine positioning uncertainty in systems with laser interferometer feedback near the work point. We will use an example to quantify these uncertainties in a real implementation of a laser-feedback-driven machine.
  • Utilizing Laser Technology in Dimensional Metrology Applications
    more accurate than other methods. Labmaster instruments use laser interferometers for the following reasons:
  • Keeping Gantries on the Straight and Narrow
    When positioning-system manufacturers build a gantry system, they typically use special alignment tools during the assembly process to ensure they meet force, precision, and life specifications. Laser interferometers are frequently used for alignment of machines to precision on the order of microns
  • Improving Stage Accuracy with ACS Dynamic Error Compensation
    Precision motion systems always exhibit some amount of positioning inaccuracy (or position error) due to various factors. These errors can be measured using external measurement devices, such as a laser interferometer, and can then be corrected by changing the motion profile according to an error
  • Linear Position and Displacement Measurement With Capacitive and Eddy-Current Sensors
    applications. Capacitive sensors work in clean environments and provide highest precision. Eddy-Current sensors can work in wet, dirty environments. They provide an economical replacement for laser interferometers when the probes can be mounted near the object and total displacements are small.
  • Understand Noise at the Sub-nanometer Scale
    Astronomers around the world were overjoyed in September 2015 when they got word that the Laser Interferometer Gravitational-Wave Observatory (LIGO) had picked up a sound from the distant universe. That sound was the noise of two black holes smashing into one another more than a billion light-years
  • Air-Coupled Acoustics: Sound PAT for Tablet Characterization
    , an air-coupled transducer, a laser interferometer, a vibrometer controller and a digitizing oscilloscope, as well as a vacuum handling apparatus consisting of a vacuum wand and a vacuum pump with a suction power of ~30 kPa. The instrumentation diagram of the acoustic excitation and interferometric detection
  • Optical Surface Accuracy
    Optical surface accuracy refers to the difference between the actual shape and the desired shape of an optical surface. It is a crucial aspect of optical components and is typically measured in terms of fringes or waves that correspond to the laser wavelength used in the interferometer

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