Вышедшие номера
Super-achromatic Quarter-wave Phase Retarder for Visible, Near Infrared and Short Wave Infrared Region Applications*
Переводная версия: 10.1134/S0030400X20080251
Mukhopadhya N.1, Saha A.2, Bhattacharya K.3
1Department of Electronics & Communication Engineering, Global Institute of Management and Technology, Krishnagar, 741102 Nadia, India
2Department of Electronics & Communication Engineering, B. P. Poddar Institute of Management and Technology, 700052 Kolkata, India
3Department of Applied Optics & Photonics, University of Calcutta, JD-2, Sector 3, Salt Lake City, Kolkata 700098, India
Email: nilu.opt@gmail.com
Поступила в редакцию: 8 декабря 2019 г.
Выставление онлайн: 24 мая 2020 г.

Phase retarders are essential components in optical system design as they can control the phase shifts associated with the vector components of incoming light waves and hence, decide the state of polarization. Different optical systems are designed to work at different wavelength spectrums. Most of these developments focus on the different wavelength regions between visible to infrared, of which the near infrared and short-wave infrared ranges are popular domains for defense and remote sensing applications. In this present communication, a super achromatic quarter-wave phase retarder consisting of four birefringent plates of different materials, i. e. KDP, crystalline quartz, ADP and ZnS has been proposed, to cover the visible, near infrared and short wave infrared regions from 400-2100 nm. As circularly polarized light is less affected by atmospheric conditions the use of an achromatic broadband quarter-wave phase retarder as proposed is quite useful. The proposed system shows acceptable performance over the intended range of wavelengths. Keywords: Wave plates, Super achromatic, Retarder, SWIR.

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