Opto-mechanical expulsion of individual micro-particles by laser-induced shockwave in air
It was recently demonstrated that laser filamentation was able to generate an optically transparent channel through clouds and fog for free-space optical communications applications. However, no quantitative measurement of the interaction between the laser-induced shockwave and the aerosol particles...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2022-09-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0106645 |
| _version_ | 1811229575646019584 |
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| author | M. C. Schroeder U. Andral J.-P. Wolf |
| author_facet | M. C. Schroeder U. Andral J.-P. Wolf |
| author_sort | M. C. Schroeder |
| collection | DOAJ |
| description | It was recently demonstrated that laser filamentation was able to generate an optically transparent channel through clouds and fog for free-space optical communications applications. However, no quantitative measurement of the interaction between the laser-induced shockwave and the aerosol particles has been carried out so far, leaving the precise nature of the clearing mechanism up for discussion. A critical question was the maximum distance at which the filament could still act on the aerosol particle. Distances widely exceeding the filament diameter and its energy reservoir exclude other potential clearing effects like shattering or explosion by direct exposure to the laser. Here, we quantify the force exerted by the shockwave on a single aerosol microparticle. The force is measured by observing the ejection and displacement of the particle when trapped in an optical tweezer. We demonstrate that even for distances ranging from 1.5 to 5.5 mm away from the filament, thus widely exceeding the filamentary region, an acoustic force of 500 pN to 8 nN (depending on the initial laser power) acts on the aerosol particle and expels it away from the optical trap. |
| first_indexed | 2024-04-12T10:16:28Z |
| format | Article |
| id | doaj.art-f27086969992483c8f951c4a613bfe2b |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-12T10:16:28Z |
| publishDate | 2022-09-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-f27086969992483c8f951c4a613bfe2b2022-12-22T03:37:11ZengAIP Publishing LLCAIP Advances2158-32262022-09-01129095119095119-610.1063/5.0106645Opto-mechanical expulsion of individual micro-particles by laser-induced shockwave in airM. C. Schroeder0U. Andral1J.-P. Wolf2Groupe de Physique Appliquée, Université de Genève, 1211 Geneva 4, SwitzerlandGroupe de Physique Appliquée, Université de Genève, 1211 Geneva 4, SwitzerlandGroupe de Physique Appliquée, Université de Genève, 1211 Geneva 4, SwitzerlandIt was recently demonstrated that laser filamentation was able to generate an optically transparent channel through clouds and fog for free-space optical communications applications. However, no quantitative measurement of the interaction between the laser-induced shockwave and the aerosol particles has been carried out so far, leaving the precise nature of the clearing mechanism up for discussion. A critical question was the maximum distance at which the filament could still act on the aerosol particle. Distances widely exceeding the filament diameter and its energy reservoir exclude other potential clearing effects like shattering or explosion by direct exposure to the laser. Here, we quantify the force exerted by the shockwave on a single aerosol microparticle. The force is measured by observing the ejection and displacement of the particle when trapped in an optical tweezer. We demonstrate that even for distances ranging from 1.5 to 5.5 mm away from the filament, thus widely exceeding the filamentary region, an acoustic force of 500 pN to 8 nN (depending on the initial laser power) acts on the aerosol particle and expels it away from the optical trap.http://dx.doi.org/10.1063/5.0106645 |
| spellingShingle | M. C. Schroeder U. Andral J.-P. Wolf Opto-mechanical expulsion of individual micro-particles by laser-induced shockwave in air AIP Advances |
| title | Opto-mechanical expulsion of individual micro-particles by laser-induced shockwave in air |
| title_full | Opto-mechanical expulsion of individual micro-particles by laser-induced shockwave in air |
| title_fullStr | Opto-mechanical expulsion of individual micro-particles by laser-induced shockwave in air |
| title_full_unstemmed | Opto-mechanical expulsion of individual micro-particles by laser-induced shockwave in air |
| title_short | Opto-mechanical expulsion of individual micro-particles by laser-induced shockwave in air |
| title_sort | opto mechanical expulsion of individual micro particles by laser induced shockwave in air |
| url | http://dx.doi.org/10.1063/5.0106645 |
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