| Design and fabrication of a spatial light modulator using thermally tunable grating and a thin-film heater. | |
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MedLine Citation:
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PMID: 19844296 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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We propose the application of a thermally tunable grating as a spatial light modulator. The grooves of a square-well grating are filled with a liquid whose refractive index depends on temperature. The variation of optical characteristics of such a grating with respect to temperature is investigated theoretically and also by simulation and experiment. A thin-film heater is then used as a heat source. The relation between intensity of the first order of diffraction versus power consumption of the thin-film heater is investigated. Finally, a thin-film heater with a desired pattern is placed at the surface of the grating to fabricate spatial light modulator. By applying electrical current to different elements of the thin-film heater, the fabricated device can project a desired pattern on a screen using a 4f imaging system. The restrictions of such a device are discussed and another structure is proposed and discussed by numerical calculations to increase the ability of the device. |
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Authors:
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Mohammadreza Riahi; Hamid Latifi; Abbas Madani; Ali Moazzenzadeh |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Applied optics Volume: 48 ISSN: 1539-4522 ISO Abbreviation: Appl Opt Publication Date: 2009 Oct |
Date Detail:
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Created Date: 2009-10-21 Completed Date: 2010-01-05 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0247660 Medline TA: Appl Opt Country: United States |
Other Details:
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Languages: eng Pagination: 5647-54 Citation Subset: - |
Affiliation:
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Laser and Plasma Research Institute, Shahid Beheshti University, Evin, Tehran, Iran. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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