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How the InGaAs is a better choice in making detector?
In line scan imaging, a linear array of detectors (Silicon, InGaAs) is used. In FPA-based imaging, 2-D arrays of detectors, also known as focal plane arrays (FPA), are used. The InGaAs camera has better sensitivity, wider spectral range, and faster response in the NIR region.
What is InGaAs sensor?
InGaAs sensors are used for applications in physical and life science that require high sensitivity over the 900-1700 nm wavelength range, referred to as shortwave infrared (SWIR). Some InGaAs sensors are able to measure up to 2500 nm due to changes in material composition.
What is InGaAs photodiode?
InGaAs photodiodes for near-infrared light detection. Features include high speed, high sensitivity, low noise, and spectral responses ranging from 0.5 μm to 2.6 μm. Suitable for a wide range of applications including optical communication, analysis, and measurement.
What does InGaAs stand for?
Indium gallium arsenide
Indium gallium arsenide (InGaAs) (alternatively gallium indium arsenide, GaInAs) is a ternary alloy (chemical compound) of indium arsenide (InAs) and gallium arsenide (GaAs). Indium and gallium are (group III) elements of the periodic table while arsenic is a (group V) element.
Why is InGaAs so expensive?
Most infrared fabs don’t run that many InGaAs wafers in a year, let alone a month, limiting their statistical process control and ability to have high yield which is one of the many reasons InGaAs detector arrays are so expensive.
What is SWIR camera?
SWIR camera. Short-wave Infrared imaging (SWIR) is an advanced technique, used for producing images based on radiation in the region of the electromagnetic spectrum invisible to the naked eye.
What is the principle of a photodiode?
A photodiode is a semiconductor p-n junction device that converts light into an electrical current. The current is generated when photons are absorbed in the photodiode….Photodiode.
| Working principle | Converts light into current |
| Pin configuration | anode and cathode |
| Electronic symbol |
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What is the main use of photodiode?
Photodiodes are used in character recognition circuits. Photodiodes are used for the exact measurement of the intensity of light in science and industry. Photodiodes are faster and more complex than normal PN junction diode and hence are frequently used for lighting regulation and optical communication.
What are the different types of InGaAs image sensors?
InGaAs linear image sensors are one-dimensional image sensors for the visible (VIS), near infrared (NIR), and short wavelength infrared (SWIR) regions.
What are the advantages of The Pirt InGaAs detector?
PIRT has a unique InGaAs detector structure, which allows for low noise and the ability to image from 0.4 to 1.7um with high Quantum Efficiency. Quantum Efficiency is how effective the material converts photons detected to electrons that can be measured.
What makes InGaAs useful and what makes SWIR useful?
Images from an InGaAs camera are comparable to visible images in resolution and detail; however, SWIR images are not in color. This makes objects easily recognizable and yields one of the tactical advantages of the SWIR, namely, object or individual identification. What Makes InGaAs Useful? That makes InGaAs interesting, but what makes it useful?
Why are InGaAs wafers so expensive to make?
Most infrared fabs don’t run that many InGaAs wafers in a year, let alone a month, limiting their statistical process control and ability to have high yield which is one of the many reasons InGaAs detector arrays are so expensive. PIRT also has the advantage of not running its own fab so there is no large overhead expense passed on to the customer.