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Advancements in High-Power Laser Diodes Fuel Essential Applications
More than 30 years ago, acclaimed physicist Edward Teller said, “No one should use a laser unless it’s a diode laser.” Although those of us engaged in the manufacture of laser diodes will perhaps be forgiven for our uncritical endorsement of Teller’s statement, ample scientific justification supports such a perspective. To start, consider the physical advantages that laser diodes offer users: For a given output power, laser diodes far surpass all alternatives in their...
Photonics Spectra, November 2024
Embedded Vision Systems Usher Deep Learning into the Imaging Domain
How would one decide which potato to select out of a group? Most people have an intuitive sense that guides them when selecting a spud, for example, at the market or from the garden, but it becomes difficult to pen an authoritative description of...
Photonics Spectra, November 2024
Optoelectronic Solutions Give Rise to Terahertz Sensing
The terahertz portion of the electromagnetic spectrum refers to the frequencies between ~100 GHz and ~10 THz. This corresponds to wavelengths between 3 mm and 30 µm. Lying between the electronic realm at lower frequencies and the optical...
Photonics Spectra, November 2024
Fourth-Generation Optics Surmount the Limitations of Planar Optics
A micrometer-thin film coated over a flat glass substrate can deflect a light beam in the same way as a prism. This film can be fabricated to be structurally smooth, at a molecular level, and as clear and haze-free as a polished window of fused...
Photonics Spectra, November 2024
Electric Vehicles Drive the Need for Advancement in Laser Welding
Propelled by legislation that aims to accelerate the adoption of electric vehicles (EVs), automakers around the world are facing growing pressures to ramp up production. Japan, Canada, and the U.K. are among the world powers that have already...
Photonics Spectra, October 2024
LEDs and Multi-Bandpass Filters Work in Tandem to Transform Fluorescence Instrumentation
Fluorescence stands as a cornerstone technology in the realm of bioanalysis. Fluorescence is one of the most sensitive spectroscopic quantification techniques, and fluorescence microscopy methods, including wide-field and confocal microscopy, enable...
Photonics Spectra, October 2024
Motion Control Upholds Micromachining’s Dynamic Role in Complex Manufacturing
Laser micromachining has proved to be revolutionary in modern manufacturing, enabling the creation of intricate features at the micro- and nanoscale. Laser micromachining and microprocessing envelop various similar, yet distinct, processes. These...
Photonics Spectra, October 2024
Test Design Kits Accelerate a ‘Fab-less to Lab-less’ Transition
Increased demand for datacom transceivers and a surge of applications that rely on AI and quantum technology have combined to drive significant growth in integrated photonics. Market research published this spring by IDTechX now values the photonic...
Photonics Spectra, September 2024
Lessons from the Past Shape the Future of Large Optics
In the 1990s, several daunting technological challenges converged, redefining both the perception and parameters of large optics. With the unprecedented demands of initiatives, such as the Lawrence Livermore National Laboratory’s National...
Photonics Spectra, September 2024
Polymers and Liquid Crystals Harness the Power of Polarization Control
In his early works on polarization, luminary physicist William Shurcliff offered a powerful sentiment: “If light is man’s most useful tool, then polarized light is the quintessence of utility.” Considerable evidence, both in the...
Photonics Spectra, September 2024
Meta-Optical Metrology Clears a Path for New Characterization Methods and Products
Meta- and nano-optics are on a fast track to a wide array of photonics systems and commercial solutions, enabling advancements that extend beyond the capabilities of more common and traditional optics. At the same time, owing to metaoptics’...
Photonics Spectra, September 2024
Lasers Accelerate the Application of Secondary Sources, Among Others
For many years, secondary sources were just a vision held by scientists. Eventually, their progress was driven by the goal to build a particle accelerator, such as the Large Hadron Collider in a laser lab at the European Council for Nuclear Research...
Photonics Spectra, August 2024
Visualizing Brilliance: Exploring Optical Design Through Simulation
From medical devices to precision instruments used for industrial manufacturing, innovative optical technologies are being increasingly integrated into products across numerous industries. The micro- and macroscopic optical components constructed...
Photonics Spectra, August 2024
Highly Efficient Multijunction VCSELs Advance for Automotive Lidar
Vertical-cavity surface-emitting lasers (VCSELs) have garnered significant attention for various sensing and visualization applications during the past three decades. The sustained progress in their development during this period owes largely to...
Photonics Spectra, August 2024
A 15-Week Technician Program Bolsters Central Florida’s Optics Ecosystem
The metropolitan areas of Orlando and Tampa, Fla., experienced the fourth and fifth largest annual population gains, respectively, in the U.S. in 2023, according to the U.S. Census Bureau. Charles Middleton, CTO of microwave photonics startup...
Photonics Spectra, August 2024
Powerful Tailwinds Support Fusion Energy’s Commercialization Road Map
Fusion energy has promised for decades to offer a clean, carbon-free, safe, and virtually limitless source to power the planet. Now that Lawrence Livermore National Laboratory (LLNL) scientists on Dec. 5, 2022, have achieved “net target...
Photonics Spectra, August 2024
How to Build a Photonic Quantum Computer
Expectations for quantum computers are high: They are supposed to outperform digital computers and pave the way for solutions that go far beyond the capabilities that artificial intelligence already delivers. They are predicted to crack unbreakable...
Photonics.com, August 2024
Femtosecond Lasers Spur a Precision Revolution in Materials Processing
The physical parameters and versatility of femtosecond sources help to facilitate operations that are beyond the reach of more conventional laser technologies. As emitters of high-intensity, ultrashort-pulse (USP) radiation, the current class of...
Photonics Spectra, July 2024
Raman Spectroscopy for Point-of-Care Blood Testing
Raman spectroscopy could soon aid traditional blood diagnostics at the patient’s bedside. Courtesy of iStock.com/Jacob Wackerhausen. Raman spectroscopy offers new possibilities for blood diagnostics, which is crucial for making timely...
Photonics Spectra, October 2024
In the All-Data Revolution, Optical Solutions Advance Beyond PICs
As the field of integrated photonics has transformed from one of theory into one of practice, rapid progress in materials science, device design, and manufacturing processes in the past two decades has helped drive the commercialization of PICs for...
Photonics Spectra, July 2024
Ultraviolet PICs Push the Potential of Nonvisible Microscopy
Manipulating ultraviolet light beams is historically difficult and costly. As it relates to imaging, bulk optics in the UV range are expensive because they require unique materials, such as quartz, magnesium fluoride, or fused silica, to ensure...
Photonics Spectra, July 2024
Chip-Scale Visible Sources Aim to Release Quantum Technology from the Lab
The visible range, spanning around 380 to 700 nm, has longstanding use in photonics. Many materials have specific absorption, reflection, and transmission characteristics in this band, which are exploited for applications from optical metrology and...
Photonics Spectra, June 2024
Photonics Charts Its Course in Helping Athletes Reach Peak Performance
Michael Matter’s journey into sports technology began with a golf ball. More specifically, a photo of a golf ball that was captured at its precise moment of impact with a club head. The photo — shot by Harold “Doc” Edgerton,...
Photonics Spectra, June 2024
Reflective Optics Improve in Durability as Applications Increase
The range of optical systems in which reflective optics appear is an appropriate indicator of the importance of these components. Mirrors are ubiquitous in the optical bench setups that enable laboratory research across disciplines. Industrial and...
Photonics Spectra, June 2024
Waveform Dynamics Sharpen Laser Scanners for Imaging Applications
Many photonics systems and methods require projecting lasers over an area of interest so that the reflected light can be sensed and interpreted. Among the most prominent examples are in the realms of imaging and ranging. These include confocal...
Photonics Spectra, June 2024
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