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Monochromator Gratings - Type IV
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Optical Diffraction Gratings
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HORIBA

Manufacturer of Optical Spectrometers, Camera Systems for OEM Industrial Applications

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Manufacturer
HORIBA
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SKU
137217
Product Name
Monochromator Gratings - Type IV
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Product Details


OEM gratings design and production capabilities

HORIBA Scientific produces a wide range of holographic master gratings from which high precision replicas are manufactured.
Using Type IV aberration-corrected monochromator gratings, a single concave grating disperses, collimates, and refocuses the light from the entrance slit onto the exit slit. Wavelength scanning is obtained through a simple rotation of the grating.
The groove spacing of these gratings is computer-optimized to produce high quality images with a minimum of astigmatism and coma, even at large numerical apertures. Compared with Czerny-Turner monochromators (equipped with one plane grating, one collimating mirror and one focusing mirror), Type IV aberration-corrected monochromator gratings provide much better light collection efficiency and signal-to-noise ratio.


ㆍ Replica gratings from aberration corrected master gratings
ㆍ Holographic Master can be blazed by Ion-beam etching method for higher efficiency
ㆍ Ideal for robust, compact and low stray light monochromators
ㆍ Several references available some (not all are listed in the catalogue)
ㆍ Large range of dispersion available
ㆍ Multiple spectral range from UV to IR
ㆍ Coating: Al or gold.


Fig. 1: Monochromator concave grating
LA: distance between the grating and the entrance slit
LB: distance between the grating and the exit slit
D: deviation angle
F/#: optical aperture



Fig. 2: Imaging Scanning Monochromator

 

Product Management and Quality

  • ISO 9001 and ISO 14001 certified
  • Unique traceability with laser marking
  • State-of-the-art metrology 
  • ITAR free products
  • Clean room storage of master gratings
  • RoHS / REACH compliant products
 

Customer Oriented and Confidentiality

  • Full confidentiality with mutual NDA
  • Blanket orders for large annual quantities
  • Long term relationship with co-designing
  • Three production facilities
 

 


ㆍ Spectral ranges: from 190 to 10,000 nm
ㆍ Large range of groove densities: from 100 to 2000 gr/mm
ㆍ Diffraction efficiency optimized for UV, or Vis, or NIR
ㆍ Radius of curvature : from 100 to 1232 mm
ㆍ Dimensions : from 25 x 25 mm
ㆍ For customers in need of larger dimensions, HJY can record a custom-made holographic grating master specifically for replication.

Fig. 3: Typical efficiency curve* for 532 00, 1200 l/mm, 190-1050 nm

 

*This efficiency curve is absolute theoretical efficiency, calculated using rigorous electromagnetic theory, taking into account the true groove profiles of manufactured gratings measured with an atomic force microscope (AFM).

 

HORIBA
Manufacturer of Optical Spectrometers, Camera Systems for OEM Industrial Applications
HORIBA Scientific is a market leader in CCD spectrometers, diffraction gratings, and scientific cameras. Our OEM division offers spectroscopy and imaging solutions that will exceed your next-generation requirements and consistently outperform the competition. That includes: ㆍ Better Stray Light performance thanks to the integration of our Aberration Corrected Holographic Concave Gratingsㆍ Superior SNR thanks to higher full well combined with lower read noise on our CCD and CMOS optimized electronics Our technology portfolio spans VUV to near-infrared wavelengths, and our global team of highly experienced project managers and engineers work closely with you to understand your product requirements and business needs. Together we will deliver innovative and cost effective volume spectroscopy and imaging solutions for your most challenging industrial applications.  
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