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Test & Measurement Webinars
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Rethinking Scratch-and-Dig Specifications
The scratch-and-dig specification, described in the MIL-PRF-13830B standard, has been the de facto method of controlling surface imperfections on optics for most components and systems since it was...
on demand
Developments in Optical Coating Metrology Technology
Tightening specifications and increased demand for high -performance optical coatings continue to drive advancements in many areas of the optical manufacturing industry. To ensure customer...
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Optimizing Micromachining Processes via Pulse-to-Pulse Measurement of Ultrafast Lasers
Sensors based on the laser-induced transverse voltage (LITV) effect offer several advantages over pyroelectric sensors and photodiodes when measuring laser energy. They feature fast sub-nanosecond...
on demand
Beginning Steps and Best Practices for Measuring Laser Beam Parameters
From laser-based additive manufacturing and micromachining operations to welding and marking systems, the only way to optimize quality, throughput, and control over your process is through active...
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Photonics Spectra
Conference 2023: January 9-12
Photonics Media will host its third annual Photonics Spectra Conference Jan. 9-12. The virtual event will comprise four technology tracks — Lasers, Optics, Test and Measurement, and Photonic...
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Looking Deeper by Listening to Light: Photoacoustic Imaging and Its Applications
Photoacoustic imaging is a novel hybrid imaging technique that combines both optical and ultrasound imaging. In this technique, a short-pulsed laser source illuminates the tissue to generate sound...
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Managing Laser Degradation in Industrial Applications
Lasers are made of physical matter. Therefore, the natural degradation of their materials can cause variability in performance. Aging optics often cause slow changes in laser behavior and, when left...
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Algorithms Al Fresco: Challenges in Visualizing High Dimensional Flow Cytometry Data
The last 20 years has seen an explosion in the technological capabilities of flow cytometers. Today it is routine to measure 20 fluorescent particles per cell, with cutting edge instrumentation...
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Dynamic Beam Lasers: Introducing New Parameters for Laser Welding
Asaf Nissenbaum, Ph.D., shares new parameters for the Dynamic Beam Laser created by Civan Lasers. The laser’s unique power distribution provides complete control of the melt pool and keyhole,...
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The Next Step in Optical Design: How the Modeling of Optics Fabrication Avoids Common Pitfalls
A new methodological analysis of optics fabrication technologies enables the modeling and simulation of whole fabrication chains — by reading in lens design data. Toward that aim, both optical...
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Noncontact Optical-Based Metrology for Microlens Characterization
Microlenses are critical components used in a wide variety of consumer devices and industrial sensors, ranging from cellphone cameras and virtual reality goggles to 3D displays and advanced...
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SPEX: Combining Spectroscopy and Polarimetry for Remote Sensing
Spectropolarimetry is a powerful technique for remote sensing of the environment. Combining spectroscopy and polarimetry allows researchers to probe particle shape and size distributions that...
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An Introduction to Plastics Laser Welding
Lasers are a beneficial tool for joining sheet, film, or molded thermoplastics, and textiles including thermoplastic composites. Laser processing allows for precise yet rapid delivery of a controlled...
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QCL Dual-Comb Spectroscopy Matures into the Mid-Infrared by Combining High-Time and High-Frequency Resolution
Since first demonstrated in 2014, the technique of quantum cascade laser (QCL) dual-comb spectroscopy has developed into a beneficial tool for a variety of mid-infrared applications. By steadily...
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Laser Measurement Solutions for Materials Microprocessing Applications
Those who use lasers in materials microprocessing applications — such as drilling via holes in PCBs, performing OLED display lift-off, and cutting smartphone cover glass — are faced with...
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Measuring Long-Wavelength Lasers with IR Cameras, Pyroelectric Scanning-Slit Sensors, and Wavelength Conversion Apparatus
Using SWIR, MIR, and FIR lasers requires knowledge of their beam quality parameters. Many considerations significantly impact the laser process, such as mode structure, positional stability, and...
on demand
Optical Solutions for Spectroscopic Water Analysis
Light can be used to understand, study, and spectroscopically characterize the many components that may exist in water. Stephanie Butron and Eric Mesa of Hamamatsu Corp. discuss the various markets...
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Expanding Implementation of Fast Optimization Technology for Photonics, Optics, and Quantum Manufacturing Applications
Alignment time is the largest contributor to the cost of silicon photonics and optical assemblies. New industrial automation technology dramatically shortens the time required to optimally align...
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Motion Amplification and Other Camera-Based Full-Field Vibration Techniques
Motion Amplification® is a camera-based full-field motion and vibration technique that detects subtle motion and enhances it to a level visible to the naked eye, resolving motions as small as 250...
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Novel Solutions for XR Optical Testing: Displays, Waveguides, Near-IR, and Beyond
Extended reality (XR) devices invoke a host of optical innovations — from micro-LED microdisplays to waveguide optics to near-infrared sensing systems. Combinations of these components have...
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Get More Out of Your Optical Measurements
Maximizing the information captured within optical measurements is the key to discovering smaller effects and observing faster processes. Both scales are at the heart of optical measurements, whether...
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Semiconductor Position-Sensitive Detectors (PSDs): Technology and Applications
Photodetectors are commonly used for measuring light power. They are also used as position-sensitive detectors (PSDs) in a wide variety of applications including human eye movement monitoring,...
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Using Optical Profiling to Optimize Finishing Steps in Additive Manufacturing
Contemporary manufacturing processes go beyond simple stamping, molding, or CNC machining steps, and adopt more advanced technologies, such as additive manufacturing and 3D printing. While the gains...
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Measuring the Power and Beam Profile of Divergent Laser Sources
Lasers with large beam divergence are used in a number of applications, such as remote sensing, optical communications, and materials processing. Large beam divergences create challenges for reliably...
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Improving the Design of Optical Devices Through STOP Analyses
There is an ever-increasing interest in structural-thermal-optical performance (STOP) analysis for optical systems, in which temperature change and structural loads affect the optical performance....
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May 2024
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