Articles tagged with Laser Physics
Researchers at KIT have successfully manufactured a pentamode metamaterial, also known as a metafluid, which exhibits unique mechanical properties. The material's behavior is determined by varying parameters, allowing it to mimic the properties of water and other substances.
The new method uses optical pumping and magnetic barriers to extract desired atoms from a stream of elements, allowing for the isolation of crucial isotopes like lithium-7. This approach promises to be a more efficient and safer means of obtaining these vital elements for medical applications.
Researchers from NIST and UVA successfully demonstrated the use of electron tweezers to move, position and assemble tiny particles at the nanoscale. Electron tweezers have the potential to offer a thousand-fold improvement in sensitivity and resolution compared to traditional laser optical tweezers.
Research suggests that physics principles may be used to create complex crop-circle patterns, with some teams reproducing damage using handheld magnetrons and microwaves. Crop-circle artists are believed to use invisible construction lines to design their work, dispelling the need for traditional tools.
Physicists at NIST have demonstrated a super-stable laser operating in a minivan, showing its potential for field use in geodesy, hydrology and space-based physics experiments. The laser was tested with the vehicle stationary and moving at speeds of less than 1 meter per second, remaining stable enough for some applications.
Scientists have successfully created an optical analogue of Hawking radiation using a laser beam and glass target. This experiment confirms the theoretical predictions of Hawking radiation, which is emitted by black holes but difficult to detect.
Researchers create Saser, a sonic equivalent to lasers producing ultra-high frequency sound waves on a nano scale. The new device has potential applications in computing, imaging, and anti-terrorist security screening.
University of Oregon physicists have developed a technique to slow down mechanical fluctuations in optomechanical oscillators, reducing phonon excitations to near 40 quanta. The goal is to reach the quantum mechanical ground state with minimal excitation, enabling precise nanotechnology measurements.
The K-State Macdonald Lab is shifting its focus to ultrafast laser science, exploring its potential for molecular engineering, healthcare and energy innovations. Researchers are working to develop optimal laser characteristics to control reactions within molecules.
Researchers developed a new set of non-linear equations that fit both conventional and non-conventional lasers, predicting important properties from simple inputs. This unifying theory solves the long-standing problem in laser physics, providing a substantially broader perspective on laser structures.
Researchers at City College of New York (CCNY) have developed new near-infrared broadband lasers with tunability ranges around triple those of earlier crystals. The lasers can operate in two telecom windows, spanning 460 nanometers, and have potential applications in telecommunications, biomedical imaging, and remote sensing.
Researchers developed a new method to observe weak interactions in nanoscale systems using high-powered lasers and quantum dots. The technique allows for the detection of the Fano effect, enabling scientists to explore new frontiers in quantum optics.
Researchers have developed a new technique to detect malaria infection in human blood using lasers and non-linear optical effects, eliminating the need for slides and microscopes. The technique holds promise for simpler, faster, and labor-intensive detection of the malaria parasite.
The Rutgers-Camden team has identified conditions that ensure thorough polymer coating and compiled new data on the effects of wavelengths on specific properties. The research aims to improve the coating of polymers in smoothness and uniformity, crucial for biomedical devices like pacemakers and artificial joint replacements.
Researchers used laser tweezers to measure the forces exerted by a virus's motor as it pushes DNA into its capsid. The study found that positively charged ions play a critical role in overcoming electrostatic repulsion, allowing the virus to inject genetic material into bacterial cells.
Researchers at UT Austin capture as few as sixty atoms in a laser trap, achieving repeated measurements of quantum atom statistics. The study creates a new field and places scientists one step closer to realizing quantum computing by controlling individual atoms.
Researchers have created a novel Raman laser that combines the pump source and material into a single device, enhancing efficiency by 30% and reducing size. The 'matryoshka' design enables tuning of the pump laser radiation to strong electronic resonance in the material, boosting gain by five orders of magnitude.
The US Navy has successfully upgraded its free electron laser to a record-breaking 10 kW power level, enabling new possibilities in manufacturing, medical research, biology, and basic physics. The upgrade marks a significant milestone in the FEL program's development and opens doors to various applications.
Researchers at UCLA created a 30-cm diameter plasma laser by applying a nonuniform magnetic field. Meanwhile, scientists have made rapid advances in detecting dark matter using weak gravitational lensing experiments. A paper also examines the emerging behavior of complex systems in electronic bidding on online auction sites like eBay.
Marlan Scully's new engine design uses a quantum heat bath to produce power, driving a piston with less wasted energy than in the Carnot model. The engine employs lasers, mirrors, and quantum coherence to capture energy from exhaust gases, improving efficiency.
The Optical Society of America honored its 2002 award winners, recognizing their significant contributions to various fields of optics. Notably, James P. Gordon received the Frederic Ives Medal for his seminal work on quantum electronics, while Emil Wolf was awarded the Esther Hoffman Beller Award for his influential educational work.
Researchers at Texas A&M University have devised a method to stop light, utilizing the EIT phenomenon to slow down photons in a gas cell. This breakthrough could enable new applications for quantum computing and modern nonlinear optics.
Researchers at University of Rochester's Laboratory for Laser Energetics successfully completed the first full-scale test of polarization smoothing on the world's most powerful laser, Omega. The technique generated 70% more fusion neutrons than without and moves closer to self-sustaining fusion.
Researchers at Clemson University have developed a new laser imaging system that provides more detailed views of breast tissue than traditional mammograms. The system uses 16 laser points to detect growths not visible on regular mammograms and predict tumor malignancy with high accuracy.
Scientists are using lasers to detect gravitational waves, which could help study dark matter and unlock the universe's secrets. The technique involves splitting a laser beam into two halves and comparing them for minute movements caused by space stretching.
The NEAR spacecraft has obtained the first ever laser range returns from an asteroid and the first ever X-ray detection of an asteroid. High-resolution images show chains of craters, numerous boulders, and long ridges on the surface of asteroid Eros.
Researchers at Vanderbilt University successfully used a free-electron laser to remove a sugar-cube-sized amount of tissue from a brain tumor. The operation took place using infrared light tuned precisely at 6.45 microns, which works well due to its absorption by water and protein molecules.
Researchers at the University of Michigan have developed a new technique to accelerate ions, using a table-top laser instead of radio-frequency waves. The new technique accelerates ions in almost a million-times shorter distance than a cyclotron, potentially making ion accelerators more affordable and accessible for medical applications.
Scientists at JILA have successfully cooled a gas of potassium atoms to temperatures near absolute zero, creating a Fermi degenerate gas. This achievement demonstrates the behavior of fermions, which are essential building blocks of matter, and could lead to breakthroughs in atomic clock technology and electronic devices.
Temple University physicist Zameer Hasan is working to increase the storage capacity of compact discs by using lasers to distinguish between different colors, allowing for a billion-fold increase in data storage. His research focuses on creating materials that can withstand high temperatures and improve the speed of laser reading.
The Hertz Foundation has awarded a $1 million endowment to establish an endowed professorship at UC Davis in recognition of Edward Teller's contributions to physics. Earnings from the endowment will support the chair's teaching, research, and administrative work.
Physicists have successfully created an atom laser from a Bose-Einstein condensate using light manipulation, building on previous research funded by the Office of Naval Research. The NIST atom laser produces a highly directional beam with improved collimation compared to earlier experiments.
Researchers have created a laser without mirrors using powdered layers of zinc oxide and gallium nitride. The device amplifies light using a disordered structure, creating feedback to form lasing cavities and producing blue laser light.
The American Physical Society is celebrating its 100th anniversary at a giant meeting in Atlanta, Georgia, from March 20-26, 1999. Over 7,000 physicists and experts will attend the event, which includes keynotes from national political figures and Nobel laureates.
The University at Buffalo is hosting a Symposium on Nanoscale Science and Technology, featuring Nobel Laureate J.C. Polanyi and experts in nanostructures and nanoparticles. Researchers will discuss their work on molecular self-assembly approaches, metallic nanoparticles, and new devices for data storage and optical communication.
A new computing technique uses chaotic elements to 'evolve' answers, offering an alternative to traditional digital computers. The system has demonstrated handling various operations, including addition, multiplication, and Boolean logic.
Researchers solved Einstein's three-dimensional equations for gravitational waves using a CRAY T3E-136 system and ImmersaDesk virtual reality systems. The demonstration showcased an 8,000-kilometer transatlantic connection, with data transmitted at millions of bits per second.
Researchers develop a new trap to confine Bose-Einstein condensates using light, enabling the manipulation of ultracold atoms. The team observes a Feshbach resonance for the first time in ultracold atoms, opening up new possibilities for studying and controlling this form of matter.
A new method developed at U of T directly dates individual grains of glaucony minerals, yielding ages scattered over millions of years. The study reveals variable sea levels and provides a way to follow their fluctuations, with applications in oil exploration industry.
The National Science Foundation has awarded Williams College a $143,912 grant to equip a new laser facility, bringing together four research labs and a student workspace. The new equipment will enable researchers to measure optical wavelengths accurately and support a broad range of research in atomic, molecular, and optical physics.
Scientists successfully converted energy in the form of light into matter, creating electrons and positrons. The experiment used high-energy electrons and photons to produce an incredible amount of power in a tiny area, marking a major breakthrough in understanding quantum electrodynamics.
Cornell researchers have developed a new technique to measure serotonin concentration in live cells, using pulsed lasers for excitation. This method allows for the visualization of serotonin secretory granules in real-time without damaging the cell or requiring external fluorescent markers.
Researchers at ORNL have developed a technique that combines laser light with pharmaceutical agents to selectively kill breast cancer cells. The laser delivers photons to the target tissue, activating an ingested agent that disables DNA replication and halts tumor growth.
Duke University's OK-4 optical klystron FEL, developed in Russia, has begun operating at the institution, producing intense beams of gamma rays and ultraviolet laser light. The device is expected to be used for medical research and answering questions in nuclear physics.
Scientists worldwide are building equipment to replicate the discovery of a new state of matter, known as the Bose-Einstein condensate. The condensate's properties have been studied extensively, with researchers making breakthroughs in understanding its behavior at extremely low temperatures.