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Production of Blazed Holographic Gratings by a Simple Optical System

Production of blazed plane holographic gratings with various groove spacing by a simple optical system as used in the Wiener's standing wave experiment is investigated. Gratings were made in Shipley AZ–1350 photoresist, and it was found that the blaze wavelength could be controlled between half and four fifth of the theoretical value of 305 nm by changing the exposur and development conditions. The groove had a good sawtooth contour up to 1500 lines/mm and the efficiency did not decrease. The wave front and the line profile were also measured and the results were as good as those of mechanically ruled gratings. The experimental results will provide valuable informations on the production of holographic gratings blazed for other spectral region.