22 September 1997 Dynamic sensors on subwavelength gratings
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A basic conception of an adaptive, remote optical sensor for small angle tilt displacement in 3D space is presented. Sensor is based on high space resolution 11,000 lines/mm adaptive photorefractive gratings has no moving parts is portable, robust and can provide measurement in plane and out-of-plane displacements simultaneously. Resolution of small angle tilt measurement of order of 10-5 Rad has been achieved. Advantages and disadvantages of this sensor are discussed.
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George Eugene Dovgalenko, George Eugene Dovgalenko, Irina I. Loutchkina, Irina I. Loutchkina, Vladimir Mikhailovi Yeskov-Soskovetz, Vladimir Mikhailovi Yeskov-Soskovetz, "Dynamic sensors on subwavelength gratings", Proc. SPIE 3137, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications III, (22 September 1997); doi: 10.1117/12.287783; https://doi.org/10.1117/12.287783

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