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12 December 2018 Study on the design and preparation of wideband deep cutoff bandpass filter
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Proceedings Volume 10847, Optical Precision Manufacturing, Testing, and Applications; 1084708 (2018) https://doi.org/10.1117/12.2504060
Event: International Symposium on Optoelectronic Technology and Application 2018, 2018, Beijing, China
Abstract
Bandpass filters are indispensable to the development of advanced optical and electro-optical systems used in space, defense, and terrestrial applications. In this paper, wideband deep cutoff bandpass filter of 750-900nm was designed and prepared by ion beam sputtering deposition technology. Long wave pass filter with high transmittance from 750 to 900nm and low transmittance from 400 to 730nm was designed and prepared on one side of the HB720 substrate. Short wave pass filter with high transmittance from 750 to 900nm and low transmittance from 930 to 1100nm was designed and prepared on the other side of the HB720 substrate. From the measured transmittance curve, the average transmittance was above 96% from 750nm to 900nm, the transmittance at the wavelength of 728nm and 928nm was less than 0.1%. The results indicated that high quality bandpass filter can be manufactured using the combination method of long-wave and short-wave filters.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yugang Jiang, Huasong Liu, Dan Chen, Lishuan Wang, Dandan Liu, Shida Li, Jiahuan He, Chenghui Jiang, and Yiqin Ji "Study on the design and preparation of wideband deep cutoff bandpass filter ", Proc. SPIE 10847, Optical Precision Manufacturing, Testing, and Applications, 1084708 (12 December 2018); https://doi.org/10.1117/12.2504060
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