Model 234/302 Spectrometer

Model 234/302 0.2 meter corrected holographic grating Monochromator, f/4.5, consisting of a vacuum tight housing. Entrance and exit slits are bilaterally adjustable from 5 microns to 3 mm via a precision micrometer. Occulter height 0 to 20 mm standard. Grating is a 1200 G/mm holographic with MgF₂ overcoat (others on request). Manual operation of the sine drive scanning system and counter type digital wavelength readout is standard and attachment of optional stepper drives is easy. Unit includes 3 inch pumping port for vacuum system. Port can be adapter equipped to fit customers or selected pumps as turbos etc. Unit comes completely assembled and factory tested.

Specifications

Focal Length 0.2 meter

Working Distance between slit assemblies 9" (229 mm)

Angle between entrance and exit beams 64 degress

f / No. 4.5

Wavelength Range 30 nm to 1.2 um

Grating Size 40 mm x 45 mm

Wavelength Accuracy (with 1200 G/mm grating) +/- 0.10 nm

Wavelength Reproducibility (with 1200 G/mm grating) +/- 0.05 nm

Performance

Grating (G/mm) (Type III Holographic) 2400 1800 1200 600 300

Wavelength Range nm from central image 275 nm 360 nm 550 nm 1100 nm 2200 nm

Resolution (nm) 0.05 0.08 0.10 0.20 0.40

Dispersion (nm/mm) 1.69 2.25 3.37 6.74 13.5

McPherson, Inc.

7A Stuart Road, Chelmsford, MA 01824

Telephone (978) 256-4512 Fax (978) 250-8625 E-Mail mcp@mcphersoninc.com

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Focal Length	0.2 meter
Working Distance between slit assemblies	9" (229 mm)
Angle between entrance and exit beams	64 degress
f / No.	4.5
Wavelength Range	30 nm to 1.2 um
Grating Size	40 mm x 45 mm
Wavelength Accuracy (with 1200 G/mm grating)	+/- 0.10 nm
Wavelength Reproducibility (with 1200 G/mm grating)	+/- 0.05 nm

Grating (G/mm) (Type III Holographic)	2400	1800	1200	600	300

Wavelength Range nm from central image	275 nm	360 nm	550 nm	1100 nm	2200 nm

Resolution (nm)	0.05	0.08	0.10	0.20	0.40

Dispersion (nm/mm)	1.69	2.25	3.37	6.74	13.5