We have built a high-speed velocimeter that has proven to be compact, simple to operate, and fairly inexpensive. This diagnostic is assembled using off-the-shelf components developed for the telecommunications industry. The main components are fiber lasers, high-bandwidth high-sample-rate digitizers, and fiber optic circulators. The laser is a 2W cw fiber laser operating at 1550nm. The digitizers have 8GHz bandwidth and can digitize four channels simultaneously at 20GS∕s. The maximum velocity of this system is ∼5000m∕s and is limited by the bandwidth of the electrical components. For most applications, the recorded beat frequency is analyzed using Fourier transform methods, which determine the time response of the final velocity time history. Using the Fourier transform method of analysis allows multiple velocities to be observed simultaneously. We have obtained high-quality data on many experiments such as explosively driven surfaces and gas gun assemblies.

In dichotic listening studies, numerous investigators have shown a left ear advantage (i.e., right hemisphere superiority), when judging emotional tone of speech. In the present study, dichotic word-pairs of emotion and non-emotion words were presented to participants who were instructed to recall the entire list in each block. Unlike other studies in which participants responded to emotional intonations, participants in the present investigation listened to stimuli that were spoken in a neutral intonation. A total of 62 participants listened to emotion (e.g., loving) and non-emotion (e.g., combine) words that were dichotically presented. The results showed a left ear advantage for emotion words. This finding provides strong support for the right-hemisphere hypothesis in the form of a stronger memory for emotion words presented to the left ear. The findings are consistent with the role of the right hemisphere in the perception of emotional information.

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Just as photolithography technology brought about the miniaturization of integrated circuits and drove multiple market opportunities in the electronics sector, a similar inflection point has arrived for ultrafast lasers. While these femtosecond class lasers have long enabled the precise manipulation of matter without heat affects, only recently, with the advent of commercial grade systems, has the potential of the technology been realized. Fiber optic architecture, embedded software control and robust telecom components have been leveraged to ensure the reliability, ease of use, and performance standards required in manufacturing settings. With femtosecond laser microfabrication tools now accessible to industry, the relevance of femtosecond lasers to modern manufacturing has become clear based on compelling economics, unparalleled precision, and new flexibility with respect to materials. These new capabilities are opening up enormous opportunities in automotive components, consumer electronics, medical devices, aerospace and bioscience applications.