Photonics Dictionary

blaze height

Blaze height typically refers to a parameter in the context of diffraction gratings, which are optical devices consisting of a series of closely spaced parallel grooves or slits. The blaze height is a crucial characteristic of a diffraction grating and is associated with the profile of the grooves.

The blaze height represents the depth or height of the grooves on the grating. In a diffraction grating, light incident on the surface is diffracted as it interacts with the periodic structure of the grooves. The blaze height is optimized to enhance the efficiency of diffraction at a specific wavelength or set of wavelengths. By carefully designing the blaze height, engineers and scientists can maximize the intensity of diffracted light at the desired spectral orders.

In practical terms, selecting an appropriate blaze height helps improve the performance of diffraction gratings in terms of dispersion, resolving power, and efficiency for specific wavelengths of interest in applications such as spectroscopy, optical communication, and other optical systems that rely on wavelength-selective components.

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