Model 2061 Czerny-Turner Monochromator Higher Resolution and Throughput Higher Spectral Resolution and Good Throughput Patented "Snap-In" gratings Imaging Optics & Large focal plane Rugged Construction with Multiple slit locations Extended wavelength range setting Optional equipment includes Model 608 prism predisperser, oversize Echelle gratings and Double Resolution / Double Pass optics

McPherson, Inc. Research Grade Czerny-Turner Monochromators are available in many different focal lengths and with many different options. Chances are good that we have one just right for your application. Models ranging from 0.67-m to 2-meter focal lengths share a wealth of features.

The 1-meter focal length Model 2061 provides the traditional blend of throughput and spectral resolution. These instruments are staples of laboratory and experimental spectroscopy. We offer this unit with an f/7 aperture ratio in two versions. The most popular uses spherical optics. An "A" version is also available. It uses hand polished master off-axis parabolic optics to best image small entrance images. Refer to our imaging page to see how incredibly these mirrors perform when you are working with small images on axis.

Used in air the spectral range of these instruments extends from 185-nm to 78-µm, and with vacuum down to 105-nm (depends on the grating.) For intermediate ranges a purge gas can be used (Nitrogen, for example.) McPherson SNAP IN gratings allow the alignment-free use of many different gratings. Easily view a wider spectral range or obtain higher resolution! You can retrofit years later and not have to worry about alignment with the McPherson SNAP IN approach. Our dual grating turret also accepts these easy to exchange gratings.

McPherson optics are Aluminum coated with a top layer of Magnesium Fluoride. This coating provides extremely good response in a broad spectral range. If required by your application other coatings (Gold, Silver, Aluminum, etc.) can be provided.

Well equipped, these instruments feature: multiple entrance and exit ports, high precision wavelength drives, extended range operation, Echelle, and oversize grating mounting capabilities. Optional features include grating turrets, imaging optics, multi-source, and multi-detector turrets further increasing versatility. See the features sheet to learn more.

PDF format Data Sheet for the high throughput Model 2061 available here

The Model 2061 offers the user excellent throughput and resolution. We also make the Model 2061, and all the long focal length Czerny-Turner models, in vacuum compatible versions.

Specifications

McPherson Model 2061 1-meter focal length f/7 Monochromator

Focal Length	1-meter, Czerny Turner design Spectrometer with Patented "Snap-In" gratings
Slit Locations	Axial and lateral with optional extra entrance and exit port selection mirrors
f / No.	7 (8.6 with smaller grating)
Grating Size	120 x 140-mm (or 110 x 110-mm) - Echelle gratings up to 220-mm wide
Wavelength Accuracy	+/-0.05 nm (with 1200 G/mm grating)
Wavelength Reproducibility	+/- 0.005 nm (with 1200 G/mm grating)
Focal Plane	50-mm maximum width, multiply dispersion by the width of your detector for range
Wavelength Range	refer to grating of interest for range, in extended position increase top limit 20%

Performance of the Model 2061 with various gratings:

Grating (G/mm) (others available)	2400	1800	1200	600	300	150	75	20
Wavelength Range from 185-nm to	650-nm	860-nm	1.3-um	2.6-um	5.2-um	10.4-um	20.8-um	78-um
First Order Littrow Blaze	240 nm	holo	250 nm	300 nm	750 nm	1.25 um	2.0 um	45 um
	300 nm		300 nm	500 nm	1.0 um	2.5 nm	3.0 nm
	holo		500 nm	750 nm	3.0 um	4.0 um	8.0 um
			750 nm	1.0 um	4.0 um	6.0 um	10.0 um
			1.0 um	1.85 um		8.0 um	12.0 um
Resolution (nm) at 313.1-nm	0.009	0.012	0.018	0.036	0.07	0.14	0.28	1.05
Dispersion (nm/mm)	0.42	0.55	0.83	1.6	3.2	6.4	12.8	48

Performance of the Model 2061 "A" with off-axis parabolas:

Grating (G/mm) (others available)	2400	1800	1200	600	300	150	75	20
Resolution (nm) at 313.1-nm	0.005	0.007	0.01	0.02	0.04	0.08	0.16	0.60