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Design of new type of isosceles blazed grating

A new type of isosceles blazed grating with compensated phase on the obverse side (abr.IBGCPOS) is designed. The problems of double-sided fabricating alignment are solved. The theoretical model of diffraction intensity is founded and simulated. The difference between IBGCPOS and the isosceles blazed gratings with compensated phase on the inverse side (abr. IBGCPIS) is analyzed. Typical distribution patterns of diffraction intensity are given. In addition, the method of binary optics fabrication for the new type grating is simply discussed.