Low power spatial light modulator with pharaonis phoborhodopsin
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| Title: | Low power spatial light modulator with pharaonis phoborhodopsin |
|---|---|
| Authors: | Sharma, Parag1, Roy, Sukhdev sukhdevr@hotmail.com, Singh, C.P. |
| Source: | Thin Solid Films. Apr2005, Vol. 477 Issue 1/2, p227-232. 6p. |
| Subjects: | Light modulators, Absorption, Electronic modulation, Energy metabolism |
| Abstract: | Abstract: Spatial light modulation (SLM) has been theoretically analysed in pharaonis phoborhodopsin (ppR) and its mutants based on nonlinear intensity induced excited-state absorption, to achieve large percentage modulation at low power. Amplitude modulation of probe laser read beam (I p′) transmissions at 560, 512 and 390 nm, corresponding to the peak absorption of ppRO, ppRKL and ppRM intermediate states, respectively, of ppR photocycle, by write beam intensity (I m′) at 498 nm, corresponding to the peak absorption of the initial ppR state, have been analysed using the rate equation approach, considering all six intermediate states in its photocycle. The SLM characteristics are shown to be sensitive to the normalized small signal absorption coefficient (β) and the rate constants of intermediates. For a given I m′ range, there is an optimum value of β (β opt) for maximum percentage modulation. We can achieve 100% modulation of the read beam if the initial ppR state does not absorb the respective probe beams. The SLM characteristics of F86D ppR have also been used to design an all-optical XOR logic gate. High dynamic range and sensitivity can be achieved at low write beam intensities in ppR compared to wild-type bacteriorhodopsin (WT-bR). [Copyright &y& Elsevier] |
| Copyright of Thin Solid Films is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 17445416 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Low power spatial light modulator with pharaonis phoborhodopsin – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Sharma%2C+Parag%22">Sharma, Parag</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Roy%2C+Sukhdev%22">Roy, Sukhdev</searchLink><i> sukhdevr@hotmail.com</i><br /><searchLink fieldCode="AR" term="%22Singh%2C+C%2EP%2E%22">Singh, C.P.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Thin+Solid+Films%22">Thin Solid Films</searchLink>. Apr2005, Vol. 477 Issue 1/2, p227-232. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Light+modulators%22">Light modulators</searchLink><br /><searchLink fieldCode="DE" term="%22Absorption%22">Absorption</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+modulation%22">Electronic modulation</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+metabolism%22">Energy metabolism</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: Spatial light modulation (SLM) has been theoretically analysed in pharaonis phoborhodopsin (ppR) and its mutants based on nonlinear intensity induced excited-state absorption, to achieve large percentage modulation at low power. Amplitude modulation of probe laser read beam (I p′) transmissions at 560, 512 and 390 nm, corresponding to the peak absorption of ppRO, ppRKL and ppRM intermediate states, respectively, of ppR photocycle, by write beam intensity (I m′) at 498 nm, corresponding to the peak absorption of the initial ppR state, have been analysed using the rate equation approach, considering all six intermediate states in its photocycle. The SLM characteristics are shown to be sensitive to the normalized small signal absorption coefficient (β) and the rate constants of intermediates. For a given I m′ range, there is an optimum value of β (β opt) for maximum percentage modulation. We can achieve 100% modulation of the read beam if the initial ppR state does not absorb the respective probe beams. The SLM characteristics of F86D ppR have also been used to design an all-optical XOR logic gate. High dynamic range and sensitivity can be achieved at low write beam intensities in ppR compared to wild-type bacteriorhodopsin (WT-bR). [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Thin Solid Films is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.tsf.2004.08.140 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 227 Subjects: – SubjectFull: Light modulators Type: general – SubjectFull: Absorption Type: general – SubjectFull: Electronic modulation Type: general – SubjectFull: Energy metabolism Type: general Titles: – TitleFull: Low power spatial light modulator with pharaonis phoborhodopsin Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Sharma, Parag – PersonEntity: Name: NameFull: Roy, Sukhdev – PersonEntity: Name: NameFull: Singh, C.P. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 04 Text: Apr2005 Type: published Y: 2005 Identifiers: – Type: issn-print Value: 00406090 Numbering: – Type: volume Value: 477 – Type: issue Value: 1/2 Titles: – TitleFull: Thin Solid Films Type: main |
| ResultId | 1 |
