Test and Measurement / Analysis Case Studies and White Papers

  1. 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.

  2. Optical Profiling Of High Slope Surfaces

    Optical profilers using Coherence Scanning Interferometry (CSI) have traditionally found it a challenge to measure highly sloped surfaces. Surfaces like these can be found in all industries and include optical micro-lenses, brightness enhancing structures, and machined cones. ZYGO offers CSI based profilers running Mx™ software with advancements in signal detection and processing that vastly improve the ability to obtain valid topography data from surfaces with high slopes.

  3. High Power Industrial Laser Applications: New Solutions To Old Problems

    The advanced scalability, high beam quality, and wall-plug efficiency of fiber lasers in particular have made high-power lasers a common tool for commercial use. This paper discusses the concepts of proper monitoring and correctly defined laser parameters in industrial laser applications.

  4. Solving A Difficult Military Beam Alignment Task

    Laser systems used in the periscope of a nuclear-powered submarine providing on-board instrumentation that offers accurate pitch, yaw, and roll data. As a result of the critical nature of this information, the burden is placed on the quality of the laser beam, its size, its shape, and its intensity. 

  5. NIR Spectroscopy Unbound

    Near-infrared (NIR) spectroscopy covers the wavelength space between ultraviolet-visible and infrared absorbance. With enormous potential for a variety of applications, NIR spectroscopy is much more accessible due to the availability of compact, high-value NIR spectrometers. This application note provides a brief introduction to NIR spectroscopy, and introduces the breakthrough Flame-NIR spectrometer from Ocean Optics for handheld and portable applications requiring NIR and chemometric analysis.