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Related Concept Videos

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.

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Updated: Jun 6, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

Long-pulse, amplitude-modulated optical parametric oscillator.

H Plaessmann, A Drobshoff, W R Bosenberg

    Applied Optics
    |December 4, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study demonstrates tailoring optical parametric oscillator (OPO) waveforms using a tunable pump source. Researchers achieved precise control over pulse shapes, including square and amplitude-modulated pulses, for versatile applications.

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    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

    Published on: July 12, 2017

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    Last Updated: Jun 6, 2026

    Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
    09:23

    Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

    Published on: May 30, 2014

    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
    10:17

    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

    Published on: July 12, 2017

    Area of Science:

    • Nonlinear optics
    • Laser physics

    Background:

    • Optical parametric oscillators (OPOs) are crucial for generating tunable laser light.
    • Controlling the temporal characteristics of OPO output is essential for various applications.

    Purpose of the Study:

    • To demonstrate pulse tailoring of a singly resonant optical parametric oscillator (OPO).
    • To showcase the versatility of a Nd:YAG-based pump source for controlling OPO temporal waveforms.

    Main Methods:

    • Utilized a periodically poled lithium niobate (PPLN) based singly resonant OPO.
    • Employed a Nd:YAG-based oscillator-modulator-amplifier pump source operating at 1.064 μm.
    • Demonstrated three distinct pulse formats: sharply rising edge, square, and amplitude-modulated square pulses.

    Main Results:

    • Achieved tunability of the OPO output over 1.45–1.67 μm (signal) and 2.9–4.0 μm (idler).
    • Successfully generated a 7-μJ, 2-μs square pulse.
    • Demonstrated 5-MHz sinusoidal amplitude modulation on the square pulse.

    Conclusions:

    • The Nd:YAG pump source enables precise temporal control over OPO output waveforms.
    • Pulse tailoring capabilities open new possibilities for OPO applications requiring specific pulse shapes.