Please use this identifier to cite or link to this item:
http://hdl.handle.net/2248/8773
Title: | Fabrication of liquid-crystal retarders for solar polarimetry: A facile method |
Authors: | Phanindra, D. V. S Greeshma, L. S Vincent, Della Raees, Muhammed Nagaraju, K Hegde, Gurumurthy Sreekumar, P Namboothiry, Manoj A. G |
Keywords: | Polarimetry LCVR Fabrication |
Issue Date: | Dec-2025 |
Publisher: | Springer Nature |
Citation: | Journal of Astrophysics and Astronomy, Vol. 46, No. 2, 43 |
Abstract: | A high-precision polarimeter for simultaneous multi-line spectropolarimetric Sun observations is under development at Indian Institute of Astrophysics. Towards this end, we plan to use liquid-crystal retarders as the polarization modulators. A prototype liquid-crystal variable retarder (LCVR) is fabricated and characterized. A solution-processed method is adapted to fabricate the LCVR using commercially available E7 nematic liquid-crystal material. Thickness of the alignment layer of the LC retarder was optimized to achieve uniformity. The fabricated LCVR demonstrates spatial uniformity of retardance comparable to a commercial waveplate. The device is found to have a low-range of operational voltage of <20 V and a very short response time of <1 ms. Also, the device shows consistent operational stability. |
Description: | Restricted Access The original publication is available at springerlink.com |
URI: | http://hdl.handle.net/2248/8773 |
ISSN: | 0973-7758 |
Appears in Collections: | IIAP Publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Fabrication of liquid-crystal retarders for solar polarimetry A facile method.pdf Restricted Access | 1.01 MB | Adobe PDF | View/Open Request a copy |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.