• 1024 x 1 and 512 x 1 arrays
• Thermoelectric or LN cooling with Temperature Tuning feature
• 16-Bit / 1-MHz digitization, PCI or USB 2.0 interface
• Software-selectable dual-amplifiers
• Build-in electronic shutter
• Up to 1800-Hz spectral rate
• Fully integrated with the TriVista NIR Raman Spectrograph
• Supported by WinSpec Software and LabVIEW

Temperature Tuning

Since the quantum efficiency of InGaAs shifts with deeper cooling, the temperature of the detector can actually function as a tunable filter, effectively narrowing the device's sensitivity to the wavelength of interest. Cryogenically cooled OMA V models provide thermostating precision of ±0.05ºC across their entire temperature range (i.e., between -50 and -100ºC, or between -70 and -120ºC), allowing you to fine-tune detector sensitivity while also screening out unwanted background.

Why Work in the NIR?
Working in the NIR offers spectroscopists several advantages. One important benefit is that unwanted fluorescence background is generally lower in the near-infrared region of the spectrum, which helps improve signal-to-noise ratio. Another advantage is that NIR detectors are able to "probe deeper" into the sample surface.
About NIR Detectors
UV-VIS spectroscopy is primarily done with scientific-grade CCDs, but because the silicon used in these devices cannot provide photosensitivity beyond 1.1 µm a different material is required for work in the NIR.
InGaAs (indium gallium arsenide) is a III-V compound semiconductor that affords excellent photosensitivity in the NIR. By changing this material's doping concentration, its sensitivity can be altered. Unlike silicon, InGaAs is utilized in a PDA – a linear array of discrete photodiodes on an integrated-circuit chip – rather than in a CCD.