Fiber Front End With Multiple Phase Modulations and High-Bandwidth Pulse Shaping for High-Energy Laser-Beam Smoothing

Dorrer, Christophe; Roides, Richard; Cuffney, Robert; Okishev, Andrey V.; Bittle, Wade A.; Balonek, Gregory; Consentino, Albert; Hill, Elizabeth; Zuegel, Jonathan D.

doi:10.1109/jstqe.2013.2260729

Fiber Front End With Multiple Phase Modulations and High-Bandwidth Pulse Shaping for High-Energy Laser-Beam Smoothing

Journal Article · Fri Nov 01 00:00:00 EDT 2013 · IEEE Journal of Selected Topics in Quantum Electronics

DOI:https://doi.org/10.1109/jstqe.2013.2260729· OSTI ID:1095903

Dorrer, Christophe ^[1]; Roides, Richard; Cuffney, Robert; Okishev, Andrey V.; Bittle, Wade A.; Balonek, Gregory; Consentino, Albert; Hill, Elizabeth; Zuegel, Jonathan D.

Laboratory for Laser Energetics, University of Rochester, Rochester, NY

The design and performance of a fiber front end delivering temporally shaped, phase-modulated optical pulses to a large-scale, high-energy laser system to demonstrate beam-smoothing concepts are presented.High-bandwidth LiNbO3 (lithium niobate) Mach--Zehnder modulators and arbitrary waveform generators temporally shape the power of the optical pulses. High-bandwidth, three-section LiNbO3 phase modulators precisely modulate the optical phase of the pulses at up to three microwave frequencies. Various calibration procedures and fail-safe systems are described. Sources of frequency-modulation-to-amplitude-modulation conversion, which can lead to unsafe operation of the high-energy laser system, are identified and compensated by amplitude and dispersion compensators.

Research Organization:: Univ. of Rochester, NY (United States). Lab. for Laser Energetics

Sponsoring Organization:: USDOE

DOE Contract Number:: FC52-08NA28302

OSTI ID:: 1095903

Report Number(s):: DOE/NA/28302-1136; 2013-16; 2108

Journal Information:: IEEE Journal of Selected Topics in Quantum Electronics, Journal Name: IEEE Journal of Selected Topics in Quantum Electronics Journal Issue: 6 Vol. 19; ISSN 1077-260X

Publisher:: IEEE Lasers and Electro-optics Society

Country of Publication:: United States

Language:: English

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