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2013 Research Highlights

MultiOFD Nanospheres fabricated by optical fiber drawing
When thinking of an optical fiber, one usually imagines the thin strands of glass that extend for thousands of kilometers around the globe forming the backbone for optical communications networks and the internet. A wide range of other devices, from fiber lasers to sensors, also benefit from extending optical functionah2ties along the length of a fiber. In terms of the form factor, there could be nothing more remote from an extended fiber than a nanoparticle. Such nanoparticles are typically produced via chemical synthesis, and a new route must be estabh2shed for each new material. more...
MultiOFD Laser pulses: Shorter, faster, and stronger
The quest for the shortest attosecond laser pulse has been underway since the first demonstration of such light sources in 2001. Single attosecond pulses with a record duration of 80 as were previously generated in 2008. Further reduction of the pulse width requires a broader spectrum with correct phase. The extreme ultraviolet (XUV) continuum produced by the Double Optical Gating (DOG) developed by Professor Zenghu Chang’s group covers much broader spectra than the previous scheme. more...
MultiOFD Breaking Newton’s third law of motion
Newton’s third law states that the action-reaction forces involved in an elemental two-body interaction must be equal and opposite. Combined with the second law of motion, this implies that two classical bodies are expected to accelerate either towards or away from each other, but never in the same direction. This is true as long as the masses of the two particles involved are positive, which is of course the case in mechanics. more...
MultiOFD New paradigms for light-matter interaction
Light induces mechanical action in different ways. When energy is exchanged, both light and material properties may be altered leading to a variety of movement or propulsion mechanisms, such as phototaxis or photophoresis. Light also carries linear and angular momenta that can be transferred directly to matter. This permits controlling microscopic systems with extreme precision. When light interacts with more complex media, new manifestations of optically-induced forces occur. more...
MultiOFD Next-generation platform for integrated photonics
Professor Sasan Fathpour and members of his research team (Research Scientist Dr. P. Rabiei, and graduate students J. Ma, S. Khan and J. Chiles) have developed a new way of integrating photonic devices that can potentially revolutionize integrated optics for applications in telecommunications as well as nonlinear and quantum optic devices on chips. Despite decades of research, there appears to be no ideal photonic material that can play the unifying role that silicon has been dominantly playing for decades in microelectronics. more...
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