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J. A. Pechkis

Researcher at University of Connecticut

Publications -  12
Citations -  210

J. A. Pechkis is an academic researcher from University of Connecticut. The author has contributed to research in topics: Chirp & Phase modulation. The author has an hindex of 9, co-authored 11 publications receiving 195 citations. Previous affiliations of J. A. Pechkis include United States Naval Research Laboratory.

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Coherent control of ultracold collisions with chirped light : Direction matters

TL;DR: In this article, the authors demonstrate the ability to coherently control ultracold atomic Rb collisions using frequency-chirped light on the nanosecond time scale, and demonstrate that for certain center frequencies of the chirp, the rate of inelastic trap-loss collisions induced by negatively chirped energy is dramatically suppressed compared to the case of a positive energy.
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Characterization and compensation of the residual chirp in a Mach-Zehnder-type electro-optical intensity modulator.

TL;DR: The residual phase modulation of a waveguide-based Mach-Zehnder electro-optical intensity modulator is characterized and it is shown that this chirp can be largely compensated with a separate phase modulator.
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Characterization and Compensation of the Residual Chirp in a Mach-Zehnder-Type Electro-Optical Intensity Modulator

TL;DR: In this article, the residual phase modulation of a fiber-based Mach-Zehnder electro-optical intensity modulator is characterized using a heterodyne technique, which is used to directly measure the phase change due to a given change in intensity, thereby determining the chirp parameter of the device.
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Generation of arbitrary frequency chirps with a fiber-based phase modulator and self-injection-locked diode laser

TL;DR: In this article, the output from a diode laser is sent through a fiber-optical delay line containing a fiberbased electrooptical phase modulator, and the phase-modulated pulse is used to injection-lock the laser.
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Coherent control of ultracold Rb 85 trap-loss collisions with nonlinearly frequency-chirped light

TL;DR: In this paper, coherent control of ultracold trap-loss collisions using 40-ns pulses of nonlinearly frequency-chirped light was studied. But the results were limited to the case of concave-down shape.