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optical frequency comb News
High-Precision Dual-Comb Sensing Method Keeps Compact Footprint
CHANGCHUN, China, May 5, 2022 — Dual-comb photothermal spectroscopy (DC-PTS), demonstrated for the first time by a joint team from the Chinese University of Hong Kong and the Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP), could provide a highly sensitive...
Silicon Carbide Light Source Exhibits Expansive Wavelength Range
PITTSBURGH, March 29, 2022 — A research team from Carnegie Mellon University has demonstrated a chip-scale broadband light source in silicon carbide. The tiny optical devices are less than 0.1 mm in size and based on optical comb technology. Such broadband light sources are...
Optical Ruler’s Expanded Frequencies Support Precision Navigation
GAITHERSBURG, Md., March 11, 2022 — Researchers at the National Institute of Standards and Technology (NIST) expanded by nearly two-thirds the frequency range over which a chip-scale device can accurately generate and measure the oscillations of lightwaves. The expanded range of the...
Single-cavity Laser Emits High-Power, Dual-Comb Femtosecond Pulses
ZÜRICH, Oct. 21, 2020 — Researchers at ETH Zurich have developed a method that uses a single laser cavity to create two high-powered optical frequency combs, emitting high-power femtosecond pulses. The advance supports potential future developments that move toward...
THz Generator Has Highest Signal Quality
MADRID, Dec. 18, 2013 — A terahertz (THz) generator currently in development improves signal quality by 1 million times as compared with the best device of its kind available on the market, opening the technology to applications in biomedicine, transportation safety,...
DARPA Seeks Ultrafast Laser Science Proposals
ARLINGTON, Va., Aug. 13, 2012 — DARPA is looking to fund projects to develop ultrafast laser applications including microwave generation, optical time transfer, laser-driven secondary radiation generation and attosecond science through its Pulse (Program in Ultrafast Laser Science...
Octave-Spanning Optical Ruler Is Precisely Tunable
GARCHING, Germany, Aug. 30, 2011 — Max Planck Institute of Quantum Optics (MPQ) scientists succeeded in generating optical frequency combs using chip-based quartz glass toroids with diameters on the micrometer scale. Taking it a step further, they have now created microresonators...
’Molecular Fingerprinting’ Improved for Gas Detection
GAITHERSBERG, Md., Oct. 21, 2010 — Scientists have demonstrated a laser-based “molecular fingerprinting” technique that can differentiate billions of hydrogen-containing and other molecules from one another in gas in just 30 seconds or less — a performance that is...
Photon Color Barrier Broken in Fiber
EUGENE, Ore., Oct. 6, 2010 — The color of single photons in a fiber optic cable has been changed for the first time. The laser-tweaked feat could be a quantum step forward for transferring and receiving high volumes of secured data for future generations of the Internet.
JILA Comb Purifies Semiconductor Process
BOULDER, Colo., Aug. 6, 2010 — In a step that could aid semiconductor manufacturing, scientists have invented an optical frequency comb that detects gas impurities that hamper production of photonic devices. Purity of ingredients is a constant concern for the semiconductor...
For fast communication, divide and conquer
DAVIS, Calif. – By splitting up one big, tough problem into many smaller and easier parts, researchers at the University of California, Davis, may have created the basis for ultrafast optical communications. Team leader S.J. Ben Yoo noted that the new approach...
Combing a Qubit
COLLEGE PARK, Md., April 8, 2010 — By adapting an optical frequency comb researchers have found a way to manipulate quantum bits (qubits). According to physicists at the University of Maryland, this discovery will be vital for the future of quantum computers. Conventional methods for...
Frequency Comb Shows Teeth
GAITHERSBURG, Md., & KONSTANZ, Germany, Nov. 2, 2009 – The first optical frequency comb that actually looks like a comb has been built and demonstrated by scientists in the US and Germany. The "teeth" of the new comb – a tool for precisely measuring different frequencies of visible light – are separated...
Nanometer Precision Lidar
GAITHERSBURG, Md., May 26, 20009 – The National Institute of Standards and Technology combined two different distance measurement approaches with the superaccuracy of an optical frequency comb to build a laser ranging system that may offer peerless precision in remote measurements.
Lasers Measure 1-Neutron Halo
MAINZ, Germany, Feb. 20, 2009 – Using lasers, scientists in Germany have precisely measured the single-neutron halo of the isotope beryllium-11 for the first time, work that may help them gain a better understanding of the forces within the atomic nucleus that bind atoms together....
Optical 'Comb' Measures Finer Frequencies
Apr 4, 2006 — BOULDER, Colo., April 4, 2006 -- A highly sensitive tool for real-time analysis of the quantity, structure and dynamics of a variety of atoms and molecules simultaneously — even in miniscule gas samples — was developed at JILA, the research lab...
(16 results found)
April 2024
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