Diffractive optical elements (DOEs) are the way to get better results in picosecond laser skin treatment according to a recent article, entitled “Diffractive micro-lens array (DLA) for uniform and selective picosecond laser treatment.” The researchers found that compared to a regular micro-lens array, diffractive beam splitters and diffractive lens arrays provide better uniformity and penetration of … Continue reading
What are high power ZnSe beam splitters? High power CO2 lasers are highly useful in multiple applications, including marking and perforation of textiles, paper, and plastics; skin treatments; and even glass welding. With increasing laser power, such laser systems can no longer be point-by-point scanned at sufficient speed to fully utilize the laser energy, requiring … Continue reading
In this video from SPIE DCS2022, Jason Palidwar (Product Group Manager – Aerospace and Specialty Optics of Iridian Spectral Technologies) discusses Iridian’s optical filters for remote sensing. These include components for earth observation (EO), IR gas sensing, and LiDAR. This video discusses how these filters provide “More Signal and Less Background” to customers’ instruments and … Continue reading
Laser debonding requires the formation of a thin long line, typically achieved by using large, complex, and expensive cylindrical optics. This article presents an alternative approach utilizing a single diffractive optical element (DOE) and a standard F-theta lens. Background: Laser UV Debonding In many flat panel processes, the active screen layer is often extremely thin, … Continue reading
In an article entitled, “Variable multibeam tool enables high accuracy and throughput”, the authors write: Miniaturization drives the industry. While feature densities increase due to the smaller structure sizes required in electronics and display manufacturing, laser scanning speed must also increase to hit throughput targets in terms of moves per second for drilling and other … Continue reading
Background: What is a multispot beam splitter? How does one generate a split laser beam? A split laser beam is the result of using a diffractive beam splitter with an incoming laser beam. This creates an array of split beams, each sharing the same intensity profile and other characteristics of the input beam (wavelength, polarization), but with … Continue reading