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Ultranarrow bandpass filter with wide nontransmission region composed of randomly distributed layer thicknesses

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2 Author(s)
Chen, Guibin ; Physics Department and Jiangsu Key Laboratory for Chemistry of Low Dimensional Material, Huaiyin Normal University, Jiangsu 223300, China and State Key Laboratory of Materials Modification by Laser, Electron, and Ion Beams, School of Physics, Optoelectronic Technology and College of Advanced Science and Technology, Dalian University of Technology, Dalian 116024, China ; Yu, Haichun

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By introducing disorder into a periodic Fabry–Pérot type of ultranarrow bandpass (UNBP) filter, the nontransmission region of the filter can be remarkably enlarged while maintaining the UNBP. The filter that was used was fabricated by using electronic beam evaporation. The introduction of disorder into the periodic structure ensures that the nontransmission region is significantly extended by 14%, with a very narrow bandpass of full width at half maximum <1.9 nm and intensity=80%.

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Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures  (Volume:29 ,  Issue: 3 )