Monochromator-spectrographs MSO350

Monochromator-spectrographs MSO350 series are general-purpose spectral instruments that can be used as monochromators or spectrographs with a large flat focal field. They are completely automated spectral devices with a focal length of 350 mm and F-number of 3.8.

Model MSO3501i and model MSO3504i have astigmatism-corrected optics what makes these devices applicable in multi-channel spectroscopy.

Automated four-grating turret (model MSO3504 and model MSO3504i) provides fast switching of gratings with high repeatability of the set wavelength.

In model MSO3501 and model MSO3501i a single-position holder is used for easy manual switching of gratings.

Specification

Optical system
Optical scheme	Cherny–Turner (astigmatism–compensated in model MSO3501i and model MSO3504i)
Ports	1 input, 2 outputs
Wavelength range	185 nm – 60 μm (depends on the type of grating)
F-number (entrance)	3.8
Focal length (output)	350 mm
Scanning range (limited by grating rotation angle)	0 – 1280 nm (grating 1200 l/mm)
Stray light	1 х 10^-5 (20 nm from laser line 632.8 nm)
Focal plane	28 х 10 mm
Imaging
Horizontal magniﬁcation	1.09
Vertical magniﬁcation	1.49 (for the astigmatism-compensated models MSO3501i, MSO3504i)
Vertical spatial resolution	< 35 μm (for the astigmatism-compensated models MSO3501i, MSO3504i)
Drive
Motor type	Stepper, with fractional steps
Drive	Worm
Step	1.62 arc seconds
Accuracy	± 1 step
Max. speed	10 000 steps/s
Ports
Number of ports	1 input, 1 or 2 output
Output port repeatability (automated mirror)	± 0.03 nm
Switching time (output port)	4 s
Optics (for grating 1200 l/mm, slit width 15 µm, wavelength 546 nm)
Reciprocal linear dispersion	2.37 nm/mm
Spectral resolution:
PMT (slit width 10 µm)	0.06 nm
Digital cameras (12 µm pixel)	0.07 nm
Wavelength repeatability	± 0.03 nm
Wavelength accuracy	± 0.06 nm
Average scanning step	0.01 nm
Gratings
Size	70 х 70 х 10 mm
Rotation	About the center of the grating working surface
Grating repeatability for the automated 4-grating turret (models MSO3504, MSO3504i)
wavelength	± 0,03 nm
vertical image	± 50 μm
Holder for 1 manually changeable grating (models MSO3501 and MSO3501i)
wavelength	± 0.05 nm
vertical image	± 75 µm
Control
Central	On-board CPU
External	PC
External interface	Ethernet
Dimensions and weight
Overall sizes (LхWхH)	510 х 395 х 200 mm
Weight	19 kg (may differ, depends on configuration)

All characteristics were measured for grating 1200 l/mm, slit width 15µm, wavelength 546 nm.

Monochromator-spectrographs MSO350

Specification

Optical system

Imaging

Drive

Ports

Optics (for grating 1200 l/mm, slit width 15 µm, wavelength 546 nm)

Gratings

Control

Dimensions and weight

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