Design holographic gratings using Fourier transform | ||
| journal of kerbala university | ||
| Article 1, Volume 10, Issue 0, January 2014, Pages 39-47 PDF (0 K) | ||
| Author | ||
| Khawla j. tahir | ||
| Abstract | ||
| In the present work we have designed a computer generated holograms using Fourier Transform .The grating was printed on the transparent paper to obtain a grating lines number (300,600,1200,2400) line/mm. The most important factors that depend on the efficiency of grating such as lines number, diffraction orders and diffraction angle have been studied. The highest efficiency was 90%(for grating lines number 2400 line/mm) fringe spacing 0.8333 µm and angle of diffraction 18˚.The grating is used to analyze the spectrum of halogen lamp and to test aspheric mirrors. | ||
| Keywords | ||
| computer generated holography; diffraction grating; Fourier transform | ||
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