High-quality lithium tantalate (LiTaO3) is an extremely powerful and versatile detector material. It is not only less expensive than many other materials, e.g. deuterated triglycine sulfate (DTGS) or mercury cadmium telluride (MCT), but also exhibits outstanding temperature stability and linearity. Through a special metal black layer, InfraTec’s infrared detector absorbs radiation extremely uniformly over a very wide wavelength range from 2 µm to over 20 µm. The LiTaO3 pyroelectric detector does not require cooling nor temperature stabilization. Therefore, it ideally suits for cost-effective and robust spectrometers, especially for use outside the laboratory. Solutions based on detector materials like DTGS or MCT quickly reach their limits here. They are less suitable for such complex applications, are more prone to failure and cause higher costs.
For spectrometer applications, pyroelectric detectors can be optimized with regard to the time constants to ensure short reaction times and modulation frequencies up to a few kilohertz. Customers use our detectors in highly specialized laser spectrometers for the measurement of lowest gas concentrations down to ppb level as well as in universally usable FTIR spectrometers.