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Femtosecond pulses News
LaserNetUS Reinvigorates Ultrahigh-Intensity Laser Research
Apr 26, 2019 — Since the invention of chirped pulse amplification (CPA) in 1985 by two of the three winners of the 2018 Nobel Prize in physics — Gérard Mourou and Donna Strickland — and the subsequent development of this technology into...
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Trends in Industrial Laser Solutions
Nov 28, 2018 — The demands on lasers grow as the need for precision in manufacturing and other applications increases. In general, lasers enable processes that cannot be performed economically in any other way — such as drilling holes, selectively removing...
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Low-Energy Laser Pulse Generates Relativistic Electron Beams
COLLEGE PARK, Md., Aug. 23, 2017 — Relativistic electrons driven by low-energy, ultrashort mid-infrared (MIR) laser pulses have been produced, according to researchers for the first time. Researchers used long-wavelength low energy femtosecond (fs) laser pulses to study relativistic...
Optical resonator builds better UV beam
ANN ARBOR, Mich. – An optimized optical resonator can be a better way to build compact ultraviolet light sources with low power consumption, which could lead to improved data storage and chemical analysis. Researchers at the University of Michigan optimized a...
Tracking ultrafast laser ablation to tune nanoparticle films
NAPLES, Italy – Ultrafast laser ablation yields two distinctly different plumes, and the behavior of both can be described well by models, researchers report. That information could be used to produce novel nanoparticle films of magnetic and semiconductor...
Laser trapping gets tighter grip on larger particles
KARMIEL, Israel, ST. PETERSBURG, Russia, and SAPPORO, Japan – Using light to trap particles as small as atoms has been popular with researchers for some time, a technique that enables optical cooling and trapping, as recognized by the 1997 Nobel Prize in physics. Now trapping of bigger particles has moved up...
Mode-locked Thin-Disk Laser Generates Microjoule Pulses
Jul 1, 2007 — Femtosecond pulses with energies in the microjoule range are useful for laser micromachining, surgery, spectroscopy and for other applications. Until recently, the common approach to generating such pulses was to produce low-energy femtosecond...
Trends in Laser Damage
Feb 1, 2007 — The demand for high-energy laser systems has increased steadily in recent years, driven by applications in defense, semiconductor processing and basic research, among others. The systems range from those that are continuous wave (CW) to those with...
Compact Solid-State Source Is Tunable from Green to Red
Jun 1, 2006 — Tunable femtosecond pulses in the visible spectral region are valuable in numerous applications, including spectroscopy, frequency metrology and confocal microscopy, but the lasers that produce these pulses tend to be bulky, temperamental and...
Laser Micromachining Yields Optical Vibration Sensor
Sep 1, 2005 — At Keio University in Yokohama, Japan, and at Harvard University in Cambridge, Mass., a team of researchers has fabricated an optical vibration sensor by writing a waveguide in glass using femtosecond pulses from a Ti:sapphire laser. The compact...
Femtosecond Laser Investigated for Lightning Control
Jan 1, 2005 — Since the early 1970s, scientists have considered the potential of lasers to manipulate the path of lightning bolts. Such a capability might enable public utilities, airports and other sensitive sites to save billions of dollars per year by avoiding...
Tunable Femtosecond UV Pulses Produced by Second-Harmonic Generation
Sep 1, 2004 — The measurement of extremely fast physical and chemical phenomena requires femtosecond pulses such as those generated in the infrared by Ti:sapphire lasers. However, ultrafast experiments with many materials require tunable femtosecond pulses in the...
Hollow Fiber Delivers Distortion-Free Femtosecond Pulses
Aug 1, 2004 — Multiphoton fluorescence is an important technique for analyzing living tissue, and fiber optic delivery of the femtosecond pulses enables useful instruments such as miniature microscopes and multiphoton endoscopes. A difficulty generally arises,...
Femtosecond Pulses Write Fiber Bragg Gratings
Aug 1, 2003 — A group at the Communications Research Centre Canada in Ottawa has presented an alternative means of writing fiber Bragg gratings that uses femtosecond pulses of 800-nm radiation from a Ti:sapphire laser. The advantage of such an approach, according...
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April 2024
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