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10 February 1981 Triangular and Sinusoidal Grooves In Holographic Gratings-Manufacture And Test Results
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Photographic recording of interference fringe fields has long been recognized as a method of producing diffraction gratings, with the potential of avoiding residual mechanical effects that occasionally inhibit the performance of ruled gratings. Practical realization required the development of suitable light sources (in the form of ion lasers), and a photographic medium capable of accepting smooth, fine pitch modulation (in the form of photoresist). However, to expand from this base and produce high grade diffraction gratings requires much more than standard holographic techniques. Some of the techniques are described. Since reduction of stray light is one of the prime reasons for adopting a direct interferometric approach to making gratings, it follows that a corresponding figure of merit ought to be adopted, capable of being determined by a simple procedure. One such approach is suggested and results given. It indicates no difference between the performance of a master and high grade replicas derived from a chain of several generations, but does indicate a difference between holographic and mechanically ruled gratings.
© (1981) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Erwin G. Loewen and Leon Bartle "Triangular and Sinusoidal Grooves In Holographic Gratings-Manufacture And Test Results", Proc. SPIE 0240, Periodic Structures, Gratings, Moire Patterns, and Diffraction Phenomena I, (10 February 1981);

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