detectors

Photoconductive Detectors

Photoconductive Detectors

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Source: Fosco Connect Photoconductive Detectors in Photonics Understanding Photoconductive Detectors in Photonics Introduction to Photoconductive Detectors Photoconductive detectors are a type of photodetectors based on photoconductive semiconductor materials. They operate by generating non-equilibrium electrical carriers upon absorbing light, which reduces the electrical resistance across two electrodes. Types of Photoconductive Detectors Alternative terms for photoconductive detectors […]

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Thermal Detectors

Thermal Detectors

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Source: System Sensor Europe Understanding Thermal Detectors in Photonics Introduction Thermal detectors are a type of light detectors that measure temperature rises resulting from the absorption of light. Unlike photodetectors, which respond to photons through light-induced transitions of electrical carriers, thermal detectors rely on the generation of heat. Basic Operation Principle A typical thermal detector

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Spectral Response Of A Photodetector

Spectral Response Of A Photodetector

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Source: MDPI Spectral Response of a Photodetector Spectral Response of a Photodetector Understanding Spectral Response The spectral response of a photodetector refers to the range of optical wavelengths or frequencies to which the detector is sensitive. It indicates the level of responsivity exhibited by the detector within that range. The minimum responsivity threshold can vary

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Solar-Blind Photodetectors

Solar-Blind Photodetectors

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Source: Nature Solar-Blind Photodetectors: Understanding Their Functionality and Applications Introduction Solar-blind photodetectors are specialized devices that are insensitive to infrared, visible, and near-UV light but are responsive to ultraviolet light with wavelengths below approximately 300 nm. These detectors play a crucial role in various applications where the detection of ultraviolet light is essential while avoiding

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Photoemissive Detectors

Photoemissive Detectors

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Source: Fosco Connect Understanding Photoemissive Detectors Overview Photoemissive detectors, also known as photoelectric detectors, are devices that utilize the external photoelectric effect to detect light. They consist of a photocathode where incident light generates photoelectrons. These photoelectrons are then pulled away from the photocathode by an anode at a positive electric potential, resulting in a

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Infrared Detectors

Infrared Detectors

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Source: Wikipedia Understanding Infrared Detectors Infrared Detectors Infrared Photodetectors Infrared detectors are used to detect infrared light. There are different types of infrared photodetectors: Infrared Photodiodes For short-wavelength near-infrared light, silicon photodiodes can be used. Beyond certain wavelengths, materials like InGaAs, germanium, and InSb are utilized. Lead salt detectors can detect longer wavelengths beyond 5

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Position-Sensitive Detectors

Position-Sensitive Detectors

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Source: Laser Components Understanding Position-Sensitive Detectors in Photonics Introduction Position-sensitive detectors are vital components in photonics that allow for the precise measurement of the position of a light spot in one or two dimensions. These detectors are commonly used in applications such as beam alignment, laser spot tracking, distance measurement through triangulation, and laser beam

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Terahertz Detectors

Terahertz Detectors

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Source: TeraSense The Basics of Terahertz Detection Introduction to Terahertz Radiation Terahertz radiation falls within the frequency range of approximately 0.1 THz to 10 THz, corresponding to wavelengths from 3 mm down to 30 μm. These frequencies are challenging to detect using conventional electronics, leading to the development of various techniques for terahertz detection, including

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Focal Plane Arrays

Focal Plane Arrays

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Source: Lockheed Martin Focal Plane Arrays Focal Plane Arrays Overview In photonics, a focal plane array (FPA) is an array of light detectors placed in the focal plane of an imaging system. It consists of a large number of detectors arranged in a two-dimensional array. FPAs can be used in various applications due to their

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