The energy in the diffracted light varies with the grating's coating material. It is necessary to use the coating material that is appropriate for the required wavelength. Fig. 10 shows the reflectance characteristics for Aℓ , Aℓ+MgF2, and Au.
Fig. 10 Reflectance of Aℓ, Aℓ+MgF2, and Au
- SHIMADZU DIFFRACTION GRATINGS
- 01. Introduction to Diffraction Gratings
- 02. What are Diffraction Gratings
- 03. The Grating Equations
- 04. Dispersion
- 05. Grating Resolution
- 06. Free Spectral Range
- 07. Blaze Wavelength
- 08. Diffraction Efficiency & Relationship between Diffraction Efficiency and Polarization
- 09. Anomalies
- 10. Profile of Grating Grooves
- 11. Toroidal Diffraction Gratings
- 12. Replicas
- 13. Coatings
- 14. Transmission Gratings
- 15. Choice of a Grating
- 16. Handling of Gratings