Test and Measurement / Analysis Case Studies and White Papers

  1. Achieving Standardized Measurements With BeamWatch AM

    The BeamWatch AM is Ophir-Spiricon’s beam monitoring system designed specifically for use in the additive manufacturing industry to provide non-interfering real-time beam measurement at the location of the working plane. This white paper delivers a comparison of results with those from the NanoScan 2, a widely-accepted scanning-slit technology, and demonstrates that the BeamWatch AM can achieve ISO-compliant measurements when correctly used.

  2. Laser Beam Diagnostics In GHz Applications

    It usually is insufficient to rely on one standard measurement technology when working with applications in exotic optical wavelengths and unusually low average powers. This white paper goes through an example of calculating many laser beam diagnostics within high GHz applications.

  3. What To Expect In A Laser Profiling Demonstration

    When asking someone for a laser beam profiling demonstration, it is important to understand what you are asking for and what you should expect. This white paper covers the steps needed to take to set up a demonstration, and what is expected of each party.

  4. Working In The Basement: Measuring Signals Below The Noise Floor With A Lock-In Amplifier

    This article presents the advantages of using lock-in amplifiers for measuring signals below the noise floor, how they work, and available devices from Ophir.

  5. Sensor Fusion Enables Comprehensive Analysis Of Laser Processing In Additive Manufacturing

    This white paper discusses sensor fusion, a process that merges data from numerous sensors to create a more complete understanding of the laser-enabled process.

  6. Intro To Laser Management: Laser Profiling 101

    Traditionally, laser operators only verify a laser’s average power or energy to improve efficiency and, if everything is in order, put their laser back into service. This article discusses steps required to identify and use a camera profiling system (arrayed camera, attenuator, and beam dump) for laser management.

  7. Reimaging UV Laser Beam Profiling

    Ophir-Spiricon offers three families of UV converter products designed for the indirect measurements of UV laser beam profiles. This application notes compares and contrasts each family, and covers their basic specifications and applications.

  8. University Research Team Faces Challenges Of Measuring Multiple Lasers

    There are often times where several laser sources must be tested, validated, or qualified for a particular project. Unfortunately, by the time scientists realize that these measurements need to be made, the laser systems are typically already in place, the experiments are ready to be conducted, and any delays could be counterproductive. Therefore, laser measurement equipment needs to be cost effective, commercially available, easy to use, quick to set up, and operate at a high level of performance. This application note describes the challenges a university had in measuring three different lasers, and how they solved this problem with the Ophir-Spiricon XC-130 InGaAs beam profiling camera.

  9. QPSI™ Vibration-Tolerant Interferometry

    Zygo’s QPSI technology eliminates the problem of environment vibrations with measurements that require no special setup or calibration. A ZYGO interferometer utilizing QPSI technology is capable of producing reliable high-precision measurements in the presence of environmental vibration from common sources such as motors, pumps, blowers, and personnel.

  10. Coherent Artifact Reduction System (CARS)

    Obstructing artifacts in interferometric data can come in many different forms, such as a “bulls-eye,” which can be caused by dust on an optical surfaced in the coherent beam path of an interferometer. These artifacts can print through on the height map and affect the magnitude and repeatability of the surface results. As a solution, ZYGO offers the Ring of FireTM extended source method for reducing noise and other artifacts. Building on this expertise, ZYGO has also developed a coherent artifact reduction system (CARS) that reduces noise from wavefront shearing, speckle, or mottle by a factor of up to 10 and allows for surface features to be resolved.