Volume 15 Issue 1
Jan.  2022
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WANG Kai-xuan, CHEN Gang, LIU Ding-quan, MA Chong, ZHANG Qiu-yu. Fabrication of an ultra-narrow band-pass filter with 60 pm bandwidth in green light band[J]. Chinese Optics, 2022, 15(1): 119-131. doi: 10.37188/CO.2021-0092
Citation: WANG Kai-xuan, CHEN Gang, LIU Ding-quan, MA Chong, ZHANG Qiu-yu. Fabrication of an ultra-narrow band-pass filter with 60 pm bandwidth in green light band[J]. Chinese Optics, 2022, 15(1): 119-131. doi: 10.37188/CO.2021-0092

Fabrication of an ultra-narrow band-pass filter with 60 pm bandwidth in green light band

doi: 10.37188/CO.2021-0092
Funds:  Supported by Natural Science Foundation of Shanghai Municipality, China (No. 17ZR1434900)
More Information
  • Author Bio:

    Wang Kai-xuan (1992—), male, born in Bozhou, Anhui Province. Doctor. He received his Bachelor’s degree from Beijing University of Aeronautics and Astronautics in 2013. Now he mainly engages in the research of optical thin film materials and devices. E-mail: wangkx@shanghaitech.edu.cn

    Chen Gang (1983—), male, born in Yinxian County, Zhejiang Province. Doctor and senior engineer. He mainly engages in the design, development and space application of optical films. E-mail: gangchen@mail.sitp.ac.cn

    Liu Ding-quan (1964—), male, born in Chenggu, Shaanxi Province. Doctor, doctoral supervisor and researcher. Currently he is the director of the research office of optical films, materials and devices, and the distinguished professor of Shanghai University of Science and Technology. His research is focused on the thin film optics and technology, infrared optical thin film and space application, and micro nano optics, etc. E-mail: dqliu@mail.sitp.ac.cn

  • Corresponding author: dqliu@mail.sitp.ac.cn
  • Received Date: 2021-04-23
  • Accepted Date: 2021-08-11
  • Rev Recd Date: 2021-05-21
  • Available Online: 2021-08-11
  • Publish Date: 2022-01-19
  • Owing to the strong penetrating ability in the atmosphere, 532 nm-wavelength green laser has wide applications including free-space optical communications and laser three-dimensional mapping. A spectral filter, with a half-power bandwidth of less than 100 pm, is an important optical element to suppress the interference of background light. Therefore, an ultra-narrow band-pass filter based on optical interference film is designed and fabricated in this paper. The high and low refractive index film are made of tantalum pentoxide (Ta2O5) and silicon dioxide (SiO2), respectively. The designed optical thin films are deposited on a fused quartz substrate by double-ion-beam sputtering deposition method. The transmission spectra of the filters are measured by a tunable laser and a power meter. The half-power bandwidths of the filters are (60±2) pm, and the transmittance reaches 62.6%.
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