The Sciencetech 9030 monochromator is a compact, single grating scanning monochromator with 100 mm focal length (both output and input). It has a manual wavelength selector dial with an optional external motor drive for computerized control. The compact design is made possible by its Seya-Namioka optical layout, using a single holographic concave grating and f/3.2 aperture. A pair of removable fixed-width slits are included for the input and output ports. Several removable fixed slit width sizes are available to choose from ranging from 100 μm to 3 mm width. Additional removable slits and custom width slits can also be purchased separately. There are 5 grating choices (sold separately) covering from UV to near-IR. The 9030 monochromator cannot be used as a spectrograph and therefore only accepts single channel and PMT detectors at its output port. However, it can be used as an excitation wavelength tunable light source.
 The 9030 is Sciencetech's most economical monochromator with a manual control wavelength selector and removable, fixed-width slits. The input and output ports are purposely placed optically in-line, making it a simple addition to a straight line beam in an optical system. Being a scanning monochromator, it does not have a flat output field and hence cannot be operated as a spectrograph with a multi-channel detector mounted at the output port.

Optics
The 9030 follows the Seya-Namioka optical layout which uses a concave holographic grating. The focused spectrum is scanned across the output slit by rotating its grating with the manual control wavelength selector dial or optional computer controlled motor drive interface. To provide an optically in-line input and output port, two plane mirrors are used to reflect the beam from the grating to the ports. The gratings are aberration corrected so the instrument has no coma or astigmatism at the designated wavelength. This means the focus position at the output slit does not change as the grating rotates through the spectral range.

Gratings
The holographic concave grating required for 9030 operation is sold separately. Please select one 32 x 32mm holographic concave grating from the list shown. The selected grating will be pre-aligned and pre-mounted onto the monochromator at the factory and, once mounted, cannot be removed. Sciencetech has 5 available gratings to choose from. They cover the wavelength region between ultraviolet (UV) and mid-infrared (mid-IR). Our Applications Specialists (sales@sciencetech-inc.com) are available to assist in choosing the proper grating for your application. The price of the gratings shown includes installation cost.

Fixed-width Slits
The 9030 monochromator accepts 8 mm high removable, fixed-width slits at its input and output ports. Simply slide the removable, fixed-width slits into the built-in slit holders. There are several standard sized fixed-width slits to choose from. If there are no suitable standard sizes, a custom sized slit can be ordered. The 9030 price includes two standard-sized, removable, fixed-width slits. The prices shown in the removable fixed-width slit table are for users who require more than two slits. Both input and output slits should have the same slit width. If you are unsure of your slit width requirements, which affect both light throughput and optical resolution, please contact a Sciencetech Applications Specialist (sales@sciencetech-inc.com) for assistance.

Drive mechanism/Software control 
The 9030 uses a precision sine drive system to rotate the grating for wavelength selection. This sine drive maintains a linear correlation between wavelength selected and readout counter which is essential in a manual control system.
With the optional motor drive the precision sine drive system is maintained and the rotation is performed by a computer controlled stepper motor. A Windows based Active-X control module (Sci-Mono) is provided with the optional motor drive so the wavelength can be selected through software. The Active-X control module can be used as stand-alone control software, or be utilized by a larger software application. This latter feature allows the motorized 9030 to be incorporated into a larger motorized spectroscopic system with its own custom software control. Also available, at additional cost, is a full featured scanning monochromator software program called “Sci-Spec” which automatically coordinates the motorized wavelength scanning action of the motorized monochromator to data acquisition from a Sciencetrech based single channel detector mounted at the output port. Sci-Spec is currently only available as a Windows based application.

Other Similar Scanning Monochromator Models
For applications where stray light is a problem a double 9030 monochromator model may be the solution. This applies to measurements of weak spectral signals against a strong background, such as in spectroradiometry, Raman spectroscopy, or UV measurements of solar radiation. Stray light in double monochromators is negligible and is further minimized by the 9030's holographic concave gratings. Sciencetech manufactures two double-9030 monochromator models where two 9030 monochromators are connected in series. In the "Double Additive" monochromator (9030DA), light is dispersed by the first monochromator and then again by the second. Both monochromator gratings are mechanically bound together so they rotate simultaneously. They are optically coupled so that the dispersion is doubled and the band pass is halved compared to that of a single 9030 monochromator. In the "Double Subtractive" monochromator (9030DS) the monochromatiors are coupled so that the dispersions cancel to zero. This leads to homogenized wavelengths at the output slit, and allows the 9030DS to be used as a tunable bandpass or notch filter. Like the 9030DA, the two monochromator grating mechanisms are mechanically bound together for simultaneous rotation.