Authors: ARIJIT SAHA KALLOL BHATTACHARYA AJOY KUMAR CHAKRABORTY
Publish Date: 2011/08/20
Volume: 77, Issue: 4, Pages: 627-631
Abstract
Phase retarders normally show strong wavelength dependence Achromatic retarders which exhibit nearly identical characteristics over a wide wavelength spectrum is used in polychromatic light The present investigation deals with a technique to design and study the characteristics of an achromatic combination of birefringent plates in 800–2000 nm range The retarder has been designed using calcite crystalline quartz and ADP The thicknesses of the plates are 1938 μm 44614 μm and 1257 μm respectively The new arrangement of three birefringent plates proposed has the promise of producing a zeroorder quarter wave achromatic combination with fairly good accuracy
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