Broadband spectral shaping using nematic liquid crystal
We demonstrate what is, to our knowledge, the first implementation of nematic liquid crystal (LC) for spectral shaping of broadband light fields. A LC cell of several microns thickness is placed between a polarizer and an analyzer. By changing the analyzer angle, one can use the combined device as a...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-03-01
|
| Series: | Results in Physics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379718324811 |
| _version_ | 1818191715370008576 |
|---|---|
| author | Bhaskar Kanseri Gyaprasad Ateesh Kumar Rathi |
| author_facet | Bhaskar Kanseri Gyaprasad Ateesh Kumar Rathi |
| author_sort | Bhaskar Kanseri |
| collection | DOAJ |
| description | We demonstrate what is, to our knowledge, the first implementation of nematic liquid crystal (LC) for spectral shaping of broadband light fields. A LC cell of several microns thickness is placed between a polarizer and an analyzer. By changing the analyzer angle, one can use the combined device as a spectral filter of different types, such as a notch filter, narrow-band filter etc. We also demonstrate that the source spectrum also gets manipulated by changing the LC cell thickness and by tuning the voltage applied across the LC cell, providing another degrees of freedom for shaping the broadband spectrum. Such important effect using liquid crystals can find technological applications in spectral shaping of light fields by making variable spectral filters, and in spectral switching based data communication schemes. Keywords: Birefringence, Polarization, Spectral switching |
| first_indexed | 2024-12-12T00:19:01Z |
| format | Article |
| id | doaj.art-0aedc0a442e1413286a756cb38cdb9b5 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-12T00:19:01Z |
| publishDate | 2019-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-0aedc0a442e1413286a756cb38cdb9b52022-12-22T00:44:46ZengElsevierResults in Physics2211-37972019-03-0112531534Broadband spectral shaping using nematic liquid crystalBhaskar Kanseri0 Gyaprasad1Ateesh Kumar Rathi2Corresponding author.; Experimental Quantum Interferometry and Polarization (EQUIP), Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110012, IndiaExperimental Quantum Interferometry and Polarization (EQUIP), Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110012, IndiaExperimental Quantum Interferometry and Polarization (EQUIP), Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110012, IndiaWe demonstrate what is, to our knowledge, the first implementation of nematic liquid crystal (LC) for spectral shaping of broadband light fields. A LC cell of several microns thickness is placed between a polarizer and an analyzer. By changing the analyzer angle, one can use the combined device as a spectral filter of different types, such as a notch filter, narrow-band filter etc. We also demonstrate that the source spectrum also gets manipulated by changing the LC cell thickness and by tuning the voltage applied across the LC cell, providing another degrees of freedom for shaping the broadband spectrum. Such important effect using liquid crystals can find technological applications in spectral shaping of light fields by making variable spectral filters, and in spectral switching based data communication schemes. Keywords: Birefringence, Polarization, Spectral switchinghttp://www.sciencedirect.com/science/article/pii/S2211379718324811 |
| spellingShingle | Bhaskar Kanseri Gyaprasad Ateesh Kumar Rathi Broadband spectral shaping using nematic liquid crystal Results in Physics |
| title | Broadband spectral shaping using nematic liquid crystal |
| title_full | Broadband spectral shaping using nematic liquid crystal |
| title_fullStr | Broadband spectral shaping using nematic liquid crystal |
| title_full_unstemmed | Broadband spectral shaping using nematic liquid crystal |
| title_short | Broadband spectral shaping using nematic liquid crystal |
| title_sort | broadband spectral shaping using nematic liquid crystal |
| url | http://www.sciencedirect.com/science/article/pii/S2211379718324811 |
| work_keys_str_mv | AT bhaskarkanseri broadbandspectralshapingusingnematicliquidcrystal AT gyaprasad broadbandspectralshapingusingnematicliquidcrystal AT ateeshkumarrathi broadbandspectralshapingusingnematicliquidcrystal |