Magnification of a polarization angle with a Littrow layout brazed grating

笹尾 一; 荒川 弘之*; 久保 博孝; 河野 康則; 伊丹 潔

Review of Scientific Instruments, 85(8), p.086106_1 - 086106_3, 2014/08

https://doi.org/10.1063/1.4892478

A new method to magnify a small polarization angle with brazed gratings has been developed. In the method, difference in diffraction efficiency for S and P polarization components is used. The magnification dependence on the incident angle can be small by arranging the grating in Littrow layout. A magnification with a factor 2.7 has been demonstrated for a 10.6 m CO laser beam as expected from a calculation. The method is applicable in many polarimetry fields.