844 Grooves/mm 41mm Dia., 230nm Polychromator Concave Diffraction Grating

Groove Density (grooves/mm):

844 ±0.75

Blaze Wavelength (nm):

230

Diameter (mm):

41.0

Diffraction Area Diameter (mm):

≥35

Edge Thickness ET (mm):

8.65

Coating:

Bare Aluminum

Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More

N-BK7

Type:

Polychromator

Diffraction Efficiency (%):

≥70 @ 210nm
≥30 @ 415nm

Radius of Curvature (mm):

138.1

Groove Profile:

Blazed

Angle of Incidence, α (°):

15.4

Diffraction Angle, β @ 200nm (°):

-5.5

Object Distance, l_a @ 200nm:

144.7

Focal Distance, I_b @ 200nm:

133.1

Regulatory Compliance

RoHS:

Compliant

Product Family Description

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 into 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.