(9030DA-VISNIR) 0.1 m Compact Double Additive Monochromator, VIS/NIR Spectral Range

The 9030DA double additive monochromator consists of two 9030 monochromators placed in series. Stray light is drastically reduced in a double monochromator, and in the 9030DA it is further minimized by the use of concave holographic gratings. The inbound light is dispersed by the first grating and again by the second. Both gratings rotate simultaneously in the same direction, and in the DA the monochromators are coupled so that the dispersion is double that of a single 9030 monochromator. Bandpass is half of the corresponding 9030 monochromator for the same output slit, and resolution using a 100 µm slit is 0.4 nm. Mirror coatings have been chosen for this model to enhance performance in the VIS-NIR spectral region.

The 9030DA can be upgraded to be motorized and controlled by a computer with the 9030 Motorized Upgrade. Only one motor and drive unit is required for both monochromators, enabling control via Sciencetech Sci-Mono Active-X library or full featured Sci-Spec software.