Introduction of DLATGS detector for IRT-5000/7000 infrared microscopes

Compared to the standard DLATGS (Deuterated L-Alanine Triglycine Sulphate) detector mounted on a FTIR for macro measurements, the MCT (Mercury Cadmium Telluride) detector used with an infrared microscope has a much greater sensitivity, which is suited to the measurement of micrometer sized samples common for microscopic measurements. However, the MCT detector has some disadvantages such as the requirement for liquid nitrogen cooling for measurements, a reduced absorbance linearity and a reduced wavenumber range for measurements. Jasco has developed a dedicated DLATGS detector for infrared microscopy, especially focusing on an increased sensitivity. As a result of many years of work, the microscope DLATGS detector has been created.

In this technical note, microscopic measurements and mapping measurements with the use of the DLATGS detector are outlined.