Jonathan A. Cox

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Timing jitter characterization of optical pulse trains from free-running mode-locked lasers with attosecond resolution is demonstrated using balanced optical cross correlation in the timing detector and the timing delay configurations. In the timing detector configuration, the balanced cross correlation between two mode-locked lasers synchronized by a(More)
We characterize the timing jitter of passively mode-locked, femtosecond, erbium fiber lasers with unprecedented resolution, enabling the observation of quantum-origin timing jitter up to the Nyquist frequency. For a pair of nearly identical 79.4MHz dispersion-managed lasers with an output pulse energy of 450pJ, the high-frequency jitter was found to be(More)
We report the synthesis of a nearly single-cycle (3.7 fs), ultrafast optical pulse train at 78 MHz from the coherent combination of a passively mode-locked Ti:sapphire laser (6 fs pulses) and a fiber supercontinuum (1-1.4 μm, with 8 fs pulses). The coherent combination is achieved via orthogonal, attosecond-precision synchronization of both pulse envelope(More)
The distribution of an ultrafast optical pulse train over multiple fiber links with longterm stable timing precision within 2 femtoseconds rms is accomplished by integrating a polarization maintaining output with 300 meter long fiber links. ©2009 Optical Society of America OCIS codes: (060.2360) Fiber optics links and subsystems; (320.7160) Ultrafast(More)
We demonstrate an ultraviolet diode laser system for cooling of trapped ytterbium ions. The laser power and linewidth are comparable to those of previous systems based on resonant frequency doubling, but the system is simpler, more robust, and less expensive. We use the laser system to cool small numbers of ytterbium ions confined in a linear Paul trap.(More)
We describe the design and performance of an ultraviolet diode laser system for laser cooling trapped ytterbium ions without frequency doubling. The performance is similar to resonantly doubled laser systems, but with greater efficiency, reduced size, expense and fragility. The system achieved laser cooling of ytterbium ions in a linear Paul trap to less(More)
We demonstrate an ultraviolet diode laser system for cooling of trapped ytterbium ions. The laser power and linewidth are comparable to previous systems based on resonant frequency doubling, but the system is simpler, more robust, and less expensive. We use the laser system to cool small numbers of ytterbium ions confined in a linear Paul trap. From the(More)
The timing jitter of erbium doped, fiber optic and Titanium:Sapphire lasers, both passively mode-locked ultrafast lasers at 80 MHz, is measured with unprecedented resolution and bandwidth. Using the balanced optical crosscorrelator timing detector, we found a total integrated timing jitter of 2.2 fs rms [100 Hz, 1 MHz] for the fiber supercontinuum and only(More)