How to choose the Right InGaAs Sensor: Key Considerations for High-Performance NIR and SWIR Imaging

Selecting the right InGaAs sensor is crucial for achieving optimal performance in applications ranging from spectroscopy to material inspection. At Synertronic Designs, we’ve put together a comprehensive Application Note to guide engineers and researchers through the most important factors to consider when choosing an InGaAs sensor — including cooling options, spectral range, and pixel performance.

Key insights include:

TE-cooled vs. non-cooled sensors:

TE-cooled options extend into the SWIR range (up to 2550 nm) with reduced dark current, while non-cooled sensors provide a cost-effective solution for NIR measurements up to 1700 nm.

Extended spectral range:

Specialized sensors such as the Hamamatsu G11608 can even capture parts of the visible spectrum (500–1700 nm).

Performance trade-offs:

Understanding pixel count, line rate, and readout configurations (such as dual-port sensors) is key to optimizing speed and sensitivity.

Whether you’re integrating sensors into a spectrometer, designing a line-scan camera, or exploring custom optical setups, this guide breaks down the specifications that matter most.

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