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Photonics Spectra Preview - May 2023

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Here is your first look at the editorial content for the upcoming May issue of Photonics Spectra.





Single-Photon Detection

This article describes the technique of photon counting and its advantages and disadvantages compared to analog detection. The article will also discuss photon number resolution and the performance constraints it puts on the photodetector. To illustrate these concepts, he will describe representative applications relying on photon number resolution.

Key Technologies: Single-photon detectors, photomultiplier tubes, single-photon avalanche photodiodes (SPADs), silicon photomultipliers, and nanowire SPDs.

Polymer Optics

Where and why is plastic a better optical material than glass in imaging applications?” Weight and cost are part of that answer. Contributing editor Marie Freebody talks to suppliers to elaborate on the other applications and reasons explaining where and why polymer optics are preferable. Her research will also aim to quantify the performance thresholds where polymer becomes a (preferred) option over glass

Key Technologies: Polymer lenses and optics, both spherical and aspheres

Multifield Cameras

Multi-array CMOS sensors combined with wafer-level coated dichroic filters enable simultaneous capturing of brightfield, darkfield, and backlight images in a single scan. The dichroic filters with minimum spectral crosstalk effectively isolate multiple light sources in the wavelength domain. Compared with the time-division approach, wavelength-division multifield imaging maximizes integration time, improves the signal-to-noise ratio, and provides higher system throughput.

Key Technologies: Imaging sensors and cameras, dichroic filters, image processing

Display Test & Measurement


Display resolution continues to increase with the rise of 4K, 8K, OLED technology. Newer emissive display technologies such as microLEDs are also increasing the demand for precise measurement in production. The imaging systems typically used to measure these displays are challenged to provide accurate pixel-level measurements during single-image analysis (which is necessary for production efficiency). To ensure the quality and uniformity of display devices, several methods can be used to improve the accuracy of pixel-level values to ensure effective qualification and demura of high-resolution OLED, miniLED, and microLED displays. This article will describe approaches for obtaining the data needed for pixel correction (demura) to help increase yields of today’s high resolution displays.

Key Technologies: OLED and microLED displays, test and measurement of pixels

Dynamic Pixel Tuning

Porotech, developer of dynamically tunable display technology, will outline the existing market challenges and past alternatives for this innovative technology, before providing details on DTD technology and how it’s approach is different. Porotech will further share upcoming challenges for both DTD tech and downstream stakeholders in manufacturing.

Key Technologies: Color microLED displays relevant to AR/VR applicatins

Column: Laser Safety

See Pricing

Published: February 2023

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