Research on compatible green stealth photonic thin film against near infrared and 1.54μm laser

Hang Wang; Ruihuang Liu

doi:10.1117/12.2520036

12 March 2019 Research on compatible green stealth photonic thin film against near infrared and 1.54μm laser

Hang Wang, Ruihuang Liu

Proceedings Volume 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application; 110233K (2019) https://doi.org/10.1117/12.2520036
Event: Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 2018, Xi'an, China

Abstract

A compatible green stealth photonic thin films against near infrared and 1. 54μm laser, based on the structure of photonic thin films are designed to achieve compatible stealth of targets in background of green plants. Optical thin films have the advantage of regulating characteristics of the beam transmission. In this paper, the thin films are designed to simulate NIR Plateau of the spectral characteristics of green plants in the range of 0.78μm to 1.3μm and form a reflection Valley at 1.54μm. Based on the transfer matrix method (TMM) of thin-films optical theory , the Needle Algorithm and Tunneling Algorithm of thin-film automatic design methods are combined to optimize and design the green thin films. Finally, the near infrared green optical thin films with NIR spectral characteristics similar to the green plants are designed. And the spectral curve has a reflection valley near the center wavelength of 1.54μm ,and the reflectivity of the wavelength of 1.54μm is as low as 5%,achieving the stealth of the laser detector with the wavelength of 1.54 μm. On this basis, the influence of four incident angle of 0°,10°,20°and 30° on the spectral curve is analyzed. The results show that the spectral curves still meet the design requirements.

Citation Download Citation

Hang Wang and Ruihuang Liu "Research on compatible green stealth photonic thin film against near infrared and 1.54μm laser", Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 110233K (12 March 2019); https://doi.org/10.1117/12.2520036

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KEYWORDS

Thin films

Reflectivity

Near infrared

Reflection

Target detection

Visible radiation

Optical design

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