Related Experiment Video

Updated: Jul 9, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Cascaded phase shift and intensity modulation in aperiodic quasi-phase-matched gratings

M Cha

    Optics Letters
    |December 18, 2007
    PubMed
    Summary

    This study enhances cascaded phase shift in second-harmonic generation using aperiodic quasi-phase matched (QPM) gratings. Optimized gratings achieved an 84% enhancement, enabling all-optical intensity modulation.

    More Related Videos

    Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating10:39

    Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

    Published on: October 11, 2016

    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station05:57

    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

    Published on: April 1, 2020

    Related Concept Videos

    Cascaded Op Amps01:16

    Cascaded Op Amps

    Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
    In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
    Time and frequency -Domain Interpretation of Phase-lead Control01:24

    Time and frequency -Domain Interpretation of Phase-lead Control

    Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
    The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
    Phase-lead and Phase-lag Controllers01:22

    Phase-lead and Phase-lag Controllers

    Understanding the working function of different types of controllers can be illustrated with practical analogies, such as adjusting a stereo's volume equalizer. Cranking up the bass involves a phase-lead controller, which functions as a high-pass filter, while increasing the treble uses a phase-lag controller, which acts as a low-pass filter. PD controllers, similar to high-pass filters, enhance the system's response to high-frequency components. PI controllers, akin to low-pass filters, manage...
    Phase Contrast and Differential Interference Contrast Microscopy01:26

    Phase Contrast and Differential Interference Contrast Microscopy

    Phase-Contrast Microscopes
    In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...