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Related Concept Videos

Interference and Diffraction02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
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...
Reconstruction of Signal using Interpolation01:10

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Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next sampling...
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Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and refractory oxide ion...
Interference: Path Lengths01:10

Interference: Path Lengths

Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
Interference and Superposition of Waves01:07

Interference and Superposition of Waves

When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...

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Related Experiment Video

Updated: Jun 20, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Published on: January 28, 2019

Critical interpixel separation in nonlinear interference filters.

E Abraham

    Optics Letters
    |September 10, 2009
    PubMed
    Summary
    This summary is machine-generated.

    We determined the minimum pixel spacing for multiple bistable devices on an interference filter. Spacing increases with device count and proximity to the switch-up threshold, allowing ~50 pixels in 4 cm².

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    Area of Science:

    • Optoelectronics
    • Photonics
    • Nonlinear Optics

    Background:

    • Bistable devices offer potential for optical computing and signal processing.
    • Understanding inter-device spacing is crucial for fabricating dense, functional optical arrays.
    • Previous research has not fully addressed the scaling limitations of densely packed bistable arrays.

    Purpose of the Study:

    • To calculate the minimum interpixel separation required for independent operation of multiple bistable devices in a 2D array.
    • To investigate the influence of holding power and the number of devices on this separation.
    • To estimate the maximum pixel density achievable within a given area.

    Main Methods:

    • Theoretical analysis of inter-device coupling in a 2D array configuration.
    • Modeling the effect of holding power on the switching dynamics of individual bistable elements.
    • Simulating array performance based on single-element switch-up thresholds.

    Main Results:

    • The minimum interpixel separation diverges as holding power approaches the single-element switch-up point.
    • Required separation increases significantly with a higher number of pixels in the array.
    • Approximately 50 bistable pixels can operate independently within a 4 cm² area at 15% below the single-element threshold.

    Conclusions:

    • Interpixel separation is a critical parameter for scalable bistable device arrays.
    • Optimized holding power and array design can maximize pixel density.
    • This work provides a framework for designing high-density optical processing systems.