Mini-Chroms are compact, in-line Fastie-Ebert monochromators

with a 74 mm pathlength, applicable for general spectroscopy

or for use as a component in a system. All incorporate one of

a wide selection of replicated gratings from the UV to IR (ruled

or holographic) and gratings are also available with aluminum

or gold coatings depending upon application. All monochro-mators

also include a set of fixed, interchangeable entrance

and exit slits. Optional sets of slits are available to optimize

either resolution or throughput.

The small size of the Mini-Chrom still results in resolution

comparable to that of many larger, more costly, conventional

monochromators.

Mini-Chroms are available in four types: Standard, Digital,

Scanning and Scanning Digital. The primary differences in

the four types relate to how the wavelength is selected and

displayed. Each type is available in several wavelength ranges

from the ultraviolet to the near infrared.

?DIGITAL MINI-CHROM

The Digital Mini-Chrom (DMC) is a manually operated

monochromator that utilizes a digital counter for wave-length

selection. Rotation of the dial causes, via a

precision lead screw/sine bar mechanism, rotation of

the diffraction grating which positions the selected wave-length

at the exit slit. Wavelength is read directly in

nanometers (nm) from a counter on models 01, 02, 03

and 04. Near infrared models (05 and 06) require

the counter reading to be doubled, to 2 nm per divi-sion,

for wavelength selection and readout. Over-all

dimensions in mm: 139 x 59 x 49; Weight: 0.7

Kg (1.5 lbs).??

WAVELENGTH READABILITY.

The wavelength on all Digital Mini-Chroms can be selected and read to 0.2 nm.

lEffective Aperture: ? 3.9

lFocal Length: 74mm

lGrating: 2cm square

lDamage Threshold: 100 Watt/cm2 CW, 2 J/ cm2 pulsed @ 100nsec

lSlits: 300μ X 4mm standard. See page 17 for additional slit sets.

lOperating Temperature: -20 ℃ to +80 ℃

lStability: + 0.02 nm/ ℃ typical

lWavelength Accuracy: + 0.2%

lReproducibility: + 0.2%