Fabrication of waveguide spatial light modulators via femtosecond laser micromachining
We have previously introduced an anisotropic leaky-mode modulator as a waveguide-based, acousto-optic solution for spatial light modulation in holographic video display systems. Waveguide fabrication for these and similar surface acoustic wave devices relies on proton exchange of a lithium niobate s...
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| Format: | Article |
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SPIE, the International Society of Optical Engineering
2018
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| Online Access: | http://hdl.handle.net/1721.1/116588 https://orcid.org/0000-0002-6937-3740 https://orcid.org/0000-0002-9244-472X https://orcid.org/0000-0003-2900-4577 https://orcid.org/0000-0001-7148-9665 https://orcid.org/0000-0001-9106-6205 |
| _version_ | 1826197924478976000 |
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| author | Savidis, Nickolaos Jolly, Sunny Datta, Bianca Karydis, Thrasyvoulos Bove, V. Michael, Jr. |
| author2 | Program in Media Arts and Sciences (Massachusetts Institute of Technology) |
| author_facet | Program in Media Arts and Sciences (Massachusetts Institute of Technology) Savidis, Nickolaos Jolly, Sunny Datta, Bianca Karydis, Thrasyvoulos Bove, V. Michael, Jr. |
| author_sort | Savidis, Nickolaos |
| collection | MIT |
| description | We have previously introduced an anisotropic leaky-mode modulator as a waveguide-based, acousto-optic solution for spatial light modulation in holographic video display systems. Waveguide fabrication for these and similar surface acoustic wave devices relies on proton exchange of a lithium niobate substrate, which involves the immersion of the substrate in an acid melt. While simple and effective, waveguide depth and index profiles resulting from proton exchange are often non-uniform over the device length or inconsistent between waveguides fabricated at different times using the same melt and annealing parameters. In contrast to proton exchange, direct writing of waveguides has the appeal of simplifying fabrication (as these methods are inherently maskless) and the potential of fine and consistent control over waveguide depth and index profiles. In this paper, we explore femtosecond laser micromachining as an alternative to proton exchange in the fabrication of waveguides for anisotropic leaky-mode modulators. |
| first_indexed | 2024-09-23T10:55:53Z |
| format | Article |
| id | mit-1721.1/116588 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T10:55:53Z |
| publishDate | 2018 |
| publisher | SPIE, the International Society of Optical Engineering |
| record_format | dspace |
| spelling | mit-1721.1/1165882022-10-01T00:02:09Z Fabrication of waveguide spatial light modulators via femtosecond laser micromachining Savidis, Nickolaos Jolly, Sunny Datta, Bianca Karydis, Thrasyvoulos Bove, V. Michael, Jr. Program in Media Arts and Sciences (Massachusetts Institute of Technology) Savidis, Nickolaos Jolly, Sunny Datta, Bianca Karydis, Thrasyvoulos Bove Jr, V Michael We have previously introduced an anisotropic leaky-mode modulator as a waveguide-based, acousto-optic solution for spatial light modulation in holographic video display systems. Waveguide fabrication for these and similar surface acoustic wave devices relies on proton exchange of a lithium niobate substrate, which involves the immersion of the substrate in an acid melt. While simple and effective, waveguide depth and index profiles resulting from proton exchange are often non-uniform over the device length or inconsistent between waveguides fabricated at different times using the same melt and annealing parameters. In contrast to proton exchange, direct writing of waveguides has the appeal of simplifying fabrication (as these methods are inherently maskless) and the potential of fine and consistent control over waveguide depth and index profiles. In this paper, we explore femtosecond laser micromachining as an alternative to proton exchange in the fabrication of waveguides for anisotropic leaky-mode modulators. 2018-06-26T12:14:42Z 2018-06-26T12:14:42Z 2016-03 2018-03-16T15:09:49Z Article http://purl.org/eprint/type/ConferencePaper 0277-786X http://hdl.handle.net/1721.1/116588 Savidis, Nickolaos, Sundeep Jolly, Bianca Datta, Thrasyvoulos Karydis, and V. M. Bove. “Fabrication of Waveguide Spatial Light Modulators via Femtosecond Laser Micromachining.” Edited by Georg von Freymann, Winston V. Schoenfeld, and Raymond C. Rumpf. Advanced Fabrication Technologies for Micro/Nano Optics and Photonics IX (March 16, 2016). https://orcid.org/0000-0002-6937-3740 https://orcid.org/0000-0002-9244-472X https://orcid.org/0000-0003-2900-4577 https://orcid.org/0000-0001-7148-9665 https://orcid.org/0000-0001-9106-6205 http://dx.doi.org/10.1117/12.2209651 Proceedings of SPIE--the Society of Photo-Optical Instrumentation Engineers Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf SPIE, the International Society of Optical Engineering SPIE |
| spellingShingle | Savidis, Nickolaos Jolly, Sunny Datta, Bianca Karydis, Thrasyvoulos Bove, V. Michael, Jr. Fabrication of waveguide spatial light modulators via femtosecond laser micromachining |
| title | Fabrication of waveguide spatial light modulators via femtosecond laser micromachining |
| title_full | Fabrication of waveguide spatial light modulators via femtosecond laser micromachining |
| title_fullStr | Fabrication of waveguide spatial light modulators via femtosecond laser micromachining |
| title_full_unstemmed | Fabrication of waveguide spatial light modulators via femtosecond laser micromachining |
| title_short | Fabrication of waveguide spatial light modulators via femtosecond laser micromachining |
| title_sort | fabrication of waveguide spatial light modulators via femtosecond laser micromachining |
| url | http://hdl.handle.net/1721.1/116588 https://orcid.org/0000-0002-6937-3740 https://orcid.org/0000-0002-9244-472X https://orcid.org/0000-0003-2900-4577 https://orcid.org/0000-0001-7148-9665 https://orcid.org/0000-0001-9106-6205 |
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