COLLEGE PARK, Md., July 12, 2024 — The well-defined spacing between frequency spikes makes the frequency comb a valuable light measurement tool. Just as the evenly spaced lines on a ruler provide a way to measure distance, the evenly spaced spikes of a frequency comb allow the measurement of unknown frequencies of light. On-chip optical frequency combs enable numerous applications, but the predominant use of single-ring microresonators in on-chip combs can limit the comb’s frequency range and optical power. A

SENDAI, Japan, May 9, 2024 — Extremely short laser pulses, in the order of attoseconds, provide a powerful way to probe and image ultrashort processes like the motion of electrons in atoms and molecules. While it is possible to create ultrashort laser pulses, creating pulses...

BEIJING, April 25, 2024 — Argon-fluoride (ArF) excimer lasers — deep ultraviolet (DUV) lasers emitting light with a wavelength of 193 nm — are used in lithography to create precise patterns. However, the limited coherence of conventional ArF excimer lasers...

SENDAI, Japan, April 9, 2024 — High spatial resolution in ultrafast laser processing is increasingly important in semiconductor fabrication, the automotive parts industry, medical device manufacturing, and other fields. In laser processing, precision and spatial resolution are...

SIMING, China, April 3, 2024 — Femtosecond (fs) fiber oscillators are a standard technology used to generate fs laser pulses. They offer a compact design, outstanding performance, and are cost-effective to use. However, the operating wavelengths for these oscillators are located...

AACHEN, Germany, March 25, 2024 — To realize the potential of personalized medicine and overcome crisis situations like the recent pandemic, labs need an efficient way to isolate living cells for analysis and testing. The ability to isolate specific cell types without impairing cell...

INDORE, India, March 5, 2024 — Photoacoustic (PA) technologies offer a noninvasive approach to probing biological tissues, but have seen limited use in clinical applications, partially due to bulky, expensive laser sources. A compact photoacoustic (PA) sensing instrument for...

DAVIS, Calif., Jan. 30, 2024 — A recent discovery from the University of California, Davis, could enable faster and more efficient magnetic hard drives by using ultrafast laser pulses to process data. The findings could significantly reduce energy consumption for data centers....

TOKYO, Dec. 28, 2023 — Ultrafast optical imaging is typically measured in picoseconds, whereas high-speed electronic cameras image at the millisecond and microsecond timescale. To bridge the gap between these technologies, a research team at the University of Tokyo...

HEIDELBERG, Germany, Dec. 12, 2023 — Reportedly for the first time, scientists have combined a broadband extreme-ultraviolet (EUV) probe pulse from high-order harmonic generation (HHG) with a free-electron laser (FEL) pump pulse to observe photodissociation pathways leading to...

GLASGOW, Scotland, Nov. 21, 2023 — The ability to compress laser pulses to ultrahigh powers could open the way for compact lasers in the order of exawatt and above. Such powerful lasers would enable scientists to push the limits of physical science by deepening their study of the...

NEW YORK, Nov. 13, 2023 — Researchers from the City University of New York (CUNY) Graduate Center and the California Institute of Technology (CalTech) have shrunk a mode-locked laser (MLL) to the size of an optical chip with an integrated nanophotonic platform. The results...

HONG KONG, Sept. 15, 2023 — A multispectral, super-low-dose photoacoustic microscopy (SLD-PAM) system developed by City University of Hong Kong (CUHK) achieves significantly higher sensitivity than traditional optical resolution photoacoustic imaging. By providing an...

Aug 1, 2023 — Ultrashort pulse lasers, such as femtosecond lasers, are becoming increasingly easy-to-use plug and play devices suitable for a wide range of industrial and biomedical applications. Fifteen years ago, these lasers were large mainframe affairs...

SHENZHEN, China, July 17, 2023 — In an advancement that could improve the way that optical distribution networks are maintained, researchers at Shenzhen University have demonstrated an encrypted fiber optic tag for all-optical labeling and the recognition of optical transmission...

Jun 1, 2023 — High-power fiber lasers are a versatile and powerful tool for a wide range of industrial applications, from cutting and welding to defense and beyond. Advancements in laser head design, beam optimization, and wavelength flexibility have caused fiber...

ZURICH, Nov. 18, 2022 — Various applications of pulsed laser sources rely on the ability to produce a series of pulse pairs with a stepwise increasing delay between them. Implementing such optical delay scanning with high precision is demanding, particularly for long...

Jun 27, 2022 — Just as electronic integrated circuits have revolutionized computing, photonic integrated circuits (PICs) are poised to transform applications such as high-speed optical communications, optical signal processing, optical sensing, and quantum...

TSUKUBA, Japan, April 1, 2022 — A nonlinear optical approach to temperature sensing, discovered by scientists at the University of Tsukuba and the Japan Advanced Institute of Science and Technology (JAIST), could expedite development of nanosize sensors for applications that...

Mar 2, 2022 — Laser shock peening is a process that adds beneficial residual stress points in materials commonly used to develop a wide range of parts and components. These residual stresses effectively increase the materials’ resistance to surface-related...

HAMAMATSU, Japan, Aug. 25, 2021 — Hamamatsu Photonics and the National Institute of Advanced Industrial Science and Technology (AIST) in Tokyo collaborated on an all-optical, portable gas monitoring system for predicting volcanic eruptions with a high degree of sensitivity. In...

ROCHESTER, N.Y., Aug. 5, 2021 — A team at the University of Rochester showed the efficacy of pulsed lasers in accelerating research into chemical catalysts. The development of even a single catalyst material capable of triggering the arrangement and motion of the atoms needed to...

Aug 3, 2021 — Driven by demand from automotive, electronics, medical devices, and other end markets, the micromachining market is on track to grow at a 6.9% compound annual growth rate over the next six years to reach a market value of $4 billion, according to a...

ITHACA, N.Y., July 27, 2021 — Cornell University researchers have developed nanostructures that enable record-breaking conversion of laser pulses into high-harmonic generation. The work paves the way for new scientific tools for high-resolution imaging as well as the study of...

May 4, 2021 — While it may seem intuitive that turning up the power on a laser will produce faster results in a materials processing operation, beam measurement tools often reveal that this only distributes the laser’s energy over a larger area, resulting...