Articles tagged with Semiconductor Lasers
The Linac Coherent Light Source (LCLS) produces the world's brightest X-ray laser, allowing researchers to capture molecular details with unprecedented resolution. This technology has far-reaching implications for medicine, energy research, and other fields.
Researchers discovered that adding a small notch to the disk edge provides a single outlet for laser light to stream out, increasing the speed of computers and telecommunication networks. The optimal geometry and boundary pumping parameters can aid in designing better-collimated microlasers.
A Princeton-led team discovered a new mechanism for making electronic materials emit laser beams, potentially leading to more efficient lasers with applications in environmental monitoring and medical diagnostics. The new laser phenomenon has some interesting features, including reduced photon absorption and improved performance.
Researchers at Harvard University developed a plasmonic collimator that reduces beam divergence by 25 times, enabling applications in photonics and communications. The innovation opens doors to edge-emitting and surface-emitting semiconductor lasers operating at various wavelengths.
Researchers at Harvard University have developed a novel device that emits coherent Terahertz (THz) radiation at room temperature, overcoming a major hurdle in laser technology. The breakthrough has significant potential for applications ranging from security screening to chemical sensing.
Researchers have doubled the efficiency of infrared lasers in the mid-infrared wavelength range, which could enable next-generation laser-based defense systems and commercial applications like trace chemical analysis and pollution monitoring. The advancements were achieved through improvements to material quality, design, and fabrication.
Researchers have developed a laser-based device to measure carbon dioxide, carbon monoxide, and methane emissions directly from vehicle exhausts. This technology has the potential to monitor emissions in real-time, enabling drivers to adjust their driving style and reduce pollution.
Researchers at JILA discovered a previously unseen type of collective electronic behavior in semiconductors, shedding light on interactions between microscopic particles. The study used ultrafast lasers to analyze the phase shift of light, confirming the importance of collective exciton behavior and its superiority over simpler models.
Researchers at UCSB's Solid State Lighting and Display Center have achieved lasing operation in nonpolar gallium nitride semiconductors, demonstrating the world's first nonpolar blue-violet laser diodes. These devices have numerous commercial applications, including high-density optical data storage for high definition displays and video.
The University of Texas at San Antonio has received a $225,000 National Science Foundation grant to support students pursuing doctoral degrees in physics. The grant will enable students to study optical and laser materials and characterize their properties.
Researchers at Harvard University have developed a new photonic device that uses an optical antenna to concentrate light and improve spatial resolution, leading to increased storage density in optical data storage platforms. The device could also be used in biology and engineering applications such as microscopy and spectroscopy.
A team of researchers from the University of Toronto has developed a new paint-on laser technology using colloidal quantum dots. This innovation could help alleviate the interconnect bottleneck in computer chip industry, which is expected to reach its capacity around 2010.
Scientists have created a machine that can track the passage of an electron in a nanostructure at a time scale of ten picoseconds and a spatial resolution of 50 nanometers. This innovation will improve our understanding of nanoscale dynamics and enable the study of previously intractable materials.
UCSB researchers have developed a hybrid silicon evanescent laser that could alleviate limitations in microelectronic systems. The laser uses InAlGaAs quantum wells to provide optical amplification and has the potential to enable highly integrated laser sources with intelligent opto-electronic devices.
Researchers at Northwestern University have developed a tiny infrared laser that can detect explosives and chemical warfare agents, setting the stage for a portable system to warn against potential threats. The far-infrared laser's high power and efficiency make it an ideal source for sensitive chemical analysis.
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.
Researchers at the University of Illinois have developed a new transistor laser that can emit a narrow, coherent beam. This technology has the potential to facilitate faster signal processing, higher speed devices and large-capacity seamless communications.
The Lehigh group achieved breakthroughs in near-infrared-range (1300-nm) InGaAsN quantum well lasers using metalorganic chemical vapor deposition (MOCVD). Their findings have the potential to lead to the production of low-cost and high-performance 1300-nm VCSELs capable of a transmission rate of 10 GB per second.
The New Focus Student Awards recognize groundbreaking research by six finalists, including Seth Aubin's work on francium trapping, E. Staffan Björlin's vertical-cavity semiconductor optical amplifiers, and Michael J. Escuti's switchable mesoscale lattices in liquid crystal polymer dispersions.
A team of Australian National University scientists has developed a type of semiconductor laser with world-leading performance, which can speed up information transport through optical fibers and improve real-time communication. The technology has attracted international commercial interest, including a Taiwanese company investing $50 ...
A biological microcavity laser, called a smart scalpel, can quickly identify abnormal protein content in tumor cells. This allows surgeons to accurately cut away malignant growths while minimizing healthy tissue removal.
A handheld laser device can detect sickle-cell anemia and track cell structure changes, distinguishing between cancerous and non-cancerous cells. The device is expected to reduce analysis time for victims of terrorist biological or chemical attacks, facilitating prompt treatment.
Researchers have successfully demonstrated intersubband stimulated emission in an actual device structure, showing the potential for a tunable, mid-infrared solid-state laser. The new design is simpler and more efficient than previous concepts, with the ability to be tuned to specific wavelengths.
Researchers at the University of Rochester have developed a new surgical semiconductor laser that can produce a unified beam with high power and precision. The laser's design makes it possible to achieve power levels of 6-12 watts, twice as much as current devices.