Diffraction Grating

Reflection Gratings

Efficient wavelength dispersion by reflection.

Introduction

Reflection gratings are optical components that use a precisely structured reflective surface to diffract incident light and separate different wavelengths. Unlike transmission gratings, the diffracted light is reflected from the grating surface, making them suitable for optical systems where efficient wavelength control and compact configurations are required.

The reflective configuration of a reflection grating allows diffracted light to be directed back through the optical system while maintaining efficient wavelength separation. This design provides flexibility in integrating spectral components into systems where optical path configuration and wavelength control are important considerations.

Applications

  • Spectrometer systems
  • Optical analyzers
  • Spectral imaging systems

Features & advantages

  • High diffraction efficiency for effective wavelength separation
  • Reflective configuration for flexible optical system design
  • Stable optical performance with optimized surface structures
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Product specifications

Parameter Specification
Product Type Reflection grating
Dimensions (mm) 12.5 – 100
Thickness (mm) 3 – 10
Groove Density (grooves/mm) 50 – 3600
Wavelength Range UV / Visible / NIR / MIR
Diffraction efficiency ≥75% (at blaze wavelength)
Surface Quality 60/40 S/D typical, tighter options available
Coating type Aluminum / silver / gold / dielectric coatings

Specifications represent typical capabilities for reflection grating. Final parameters are confirmed according to specific optical and grating design requirements.

Technical capabilities & processing options

  • Precision Grating Fabrication:
    Controlled manufacturing processes ensure accurate groove structures, consistent diffraction performance, and reliable optical characteristics for custom reflection gratings.
  • Optical Surface Processing:
    Precision polishing and surface finishing processes maintain required surface quality and optical performance for demanding spectral applications.
  • Reflective Coating Options:
    Metallic and dielectric coatings can be applied to optimize reflectivity and wavelength performance across different spectral ranges.
  • Optical Inspection and Verification:
    Comprehensive inspection procedures verify groove quality, surface characteristics, and optical performance to ensure consistent product reliability.

Need a Custom Reflection Grating?

Share your drawing, wavelength range, groove requirements, and optical specifications. Our team can review grating design, coating options, and customization requirements for your application.

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