ZEISS Concave Diffraction Gratings
• High Grating Efficiency and Low Stray Light
• Holographically Produced to Minimize Aberrations
• Rowland Circle or Polychromator Mounting Configurations
ZEISS Concave Diffraction Gratings combine dispersive and imaging properties onto a single optical component
for integration into spectroscopic systems. These concave gratings are produced holographically, optimizing
the focal plane and minimizing aberrations over the wavelength range of the grating. ZEISS Concave
Diffraction Gratings are designed to have high grating efficiency and minimized stray light, improving the
spectral resolution and signal to noise ratios of spectrometers. Diffraction gratings with Rowland Circle or polychromator
mounting configurations are available. Rowland Circle gratings are ideal for spectroscopic systems
designed on a Rowland Circle while polychromator gratings are optimized for setups with a fixed arrangement
of the entrance slit, grating, and plane sensor.
S PECI A L
HANDLING
κ
Transmission Grating Efficiency Curves
300 400 500 600 700 800 900 1000 1100
Transmission Grating Beamsplitters
d ( )
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Substrate: Rowland: ZERODUR®
#11-539: N-ZK7
Polychromator: N-BK7
Coating: Bare Aluminum
Groove Profile: Rowland: Sinusoidal
Polychromator: Blazed
ZEISS Concave Diffraction Gratings - Rowland Circle
Diameter
Thickness
ROC
(mm)
(mm)
(mm)
Groove
Density
(l/mm)
Blaze
Wavelength
(nm)
Angle of
Incidence, α
Diffraction
Angle @
200nm, β
Object
Distance,
IA (mm)
Focal
Distance,
IB (mm)
Stock
No. Price
32,0 7,0 150,7 3600 220 -40,0 -4,4 115,4 150,3 #11-536 €550,00
40,0 8,0 298,5 3600 220 -40,0 -4,4 228,7 297,6 #11-535 €595,00
40,0 12,2 501,2 2700 220 -40,0 5,9 383,9 498,5 #11-537 €610,00
50,0 9,3 398,8 2400 200 -40,0 9,4 305,5 393,5 #11-539 €570,00
64,5 11,8 749,9 2400 180 -40,0 9,4 574,4 739,9 #11-538 €685,00
ZEISS Concave Diffraction Gratings - Polychromator
Diameter
Thickness
ROC
(mm)
(mm)
(mm)
Groove
Density
(l/mm)
Blaze
Wavelength
(nm)
Angle of
Incidence, α
Diffraction
Angle @
200nm, β
Object
Distance,
IA (mm)
Focal
Distance,
IB (mm)
Stock
No. Price
25,0 10,0 149,7 1600 230 4,0 14,5 159,7 146,6 #11-540 €545,00
30,0 8,0 109,8 320 230 -3,8 7,4 110,0 108,2 #11-543 €550,00
30,0 8,0 109,8 600 230 -7,2 14,2 113,6 104,8 #11-541 €645,00
41,0 8,7 138,1 844 230 15,4 -5,5 144,7 133,1 #11-544 €535,00
64,0 12,0 109,8 320 230 12,0 -8,3 105,4 111,4 #11-542 €675,00
β
la
lb
entrance
slit
diode
array
α
200nm
300nm
spectrum
entrance slit
β
α
NEW
See our website for full mounting
configurations and datasheets
Rowland Circle Configuration
Polychromator Configuration
Transmission Gratings
• Low Polarization Sensitivity
• Ideal for In-Line Configurations
Transmission Gratings are designed to disperse incident
light at specific angles. Dispersion increases as angle
of incidence increases or as groove spacing decreases.
Coarse groove spacing maintains high efficiency while
fine groove spacing reduces transmission at long wavelengths
resulting in low efficiency. Since light is transmitted
rather than reflected, transmission gratings can be
used in compact, in-line configurations. They are ideal
for use in monochromators and spectrometers.
Substrate: B270
Thickness: 3 mm ±0,5 mm
Dimensional Tolerance: ±0,5 mm
Wavelength (nm)
Absolute Efficiency %
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
300 grooves/mm
600 grooves/mm
830 grooves/mm
1200 grooves/mm
Transmission Gratings
Grooves/mm
Blaze
Angle
Wavelength
12,7 x 12,7 mm 25 x 25 mm 50 x 50 mm
Stock No. Price Stock No. Price Stock No. Price
300 17,5° VIS #49-575 €90,00 #49-579 €110,00 #49-583 €205,00
600 28,7° VIS #49-576 €90,00 #49-580 €110,00 #49-584 €205,00
830 29,9° VIS #49-577 €90,00 #49-581 €110,00 #49-585 €205,00
1200 36,9° VIS #49-578 €90,00 #49-582 €110,00 #49-586 €205,00
Incident
Beam
-nth
-2
-1 order
0 order
+1 order
+2
+nth
Transmission grating beamsplitters
are commonly
used
for laser beam division
and multiple
laser line separation
in visible
wavelengths.
The transmitted
beam is diffracted
into multiple orders. Edmund Optics’ transmission
grating
beamsplitters consist
of an index
matched epoxy
replica
on a polished
glass substrate,
for a high total
efficiency.
Several gratings are available, offering
different
dispersion
and power
distributions.
The diffraction
angle for any wavelength may be calculated using
the
grating
equation
for normal incident
light.
TRANSMISSION GRATING EQUATION:
qn = diffraction angle for the nth order
n = diffracted order (integer)
l = wavelength of light (nm)
d = grating period = 1/(grooves/mm)
Substrate: B270
Thickness: 3 mm ±0,5 mm
Dimensional
Tolerance: ±0,5 mm
Transmission Grating Beamsplitters
Grooves/mm
HeNe Diffracted Order Typical Distribution @ 632 nm (%) 12,7 x 12,7 mm 25 x 25 mm
-2 -1 0 +1 +2 Stock No. Price Stock No. Price
70 – – 41 32 – #46-067 €114,00 #46-068 €228,00
80 5 25 25 25 5 #46-069 €114,00 #46-070 €228,00
92 – 20 45 20 – #46-071 €114,00 #46-072 €228,00
110 – 25 28 25 – #46-073 €114,00 #46-074 €228,00
qn = sin-1 nl
S PE C I AL
HANDLING
S PE C IA L
HANDLING
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