Determination of a CO2 laser beam profile using a Smartphone camera

Lasers find extensive applications across a spectrum from academic research to industrial use. In various instances, understanding the intensity profile of laser light is of paramount importance, specifically how its intensity changes along its propagation path. In this study, we introduce an econom...
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Autor*in:	Gabriel de Toledo Paula [verfasserIn] Nicolas Ribeiro [verfasserIn] Jader de Souza Cabral [verfasserIn] Carlos Renato Menegatti [verfasserIn]

Format:	E-Artikel
Sprache:	Portugiesisch

Erschienen:	2024

Schlagwörter:	CO2 laser beam profile knife-edge Smartphone camera

Übergeordnetes Werk:	In: Revista Brasileira de Ensino de Física - Sociedade Brasileira de Física, 2004, 46(2024)
Übergeordnetes Werk:	volume:46 ; year:2024

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1590/1806-9126-rbef-2023-0370

Katalog-ID:	DOAJ100805523

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allfieldsSound	10.1590/1806-9126-rbef-2023-0370 doi (DE-627)DOAJ100805523 (DE-599)DOAJ920ad710826c43079c014b1d1049e51c DE-627 ger DE-627 rakwb por QC1-999 Gabriel de Toledo Paula verfasserin aut Determination of a CO2 laser beam profile using a Smartphone camera 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Lasers find extensive applications across a spectrum from academic research to industrial use. In various instances, understanding the intensity profile of laser light is of paramount importance, specifically how its intensity changes along its propagation path. In this study, we introduce an economical and alternative technique for determining the waist of a Gaussian laser beam, leveraging the capabilities of a Smartphone camera. Our methodology entails directing a CO2 laser onto a thermochromic liquid crystal sheet for specific exposure duration, resulting in a color pattern that evolves over time. This evolving pattern is captured by a Smartphone camera, and selected frames from the recording are processed and analyzed to quantify the beam’s waist, denoted as w ( z ). Our measurements are compared with those obtained through the traditional knife-edge method, demonstrating a substantial degree of agreement. Furthermore, by interpolating the waists calculated through our approach, we were able to ascertain the beam waist at the focus and the focal point of a converging lens, yielding results consistent with the reference method. Our findings underscore the viability of this approach as a cost-effective alternative for characterizing Gaussian beams, with potential applications in optics, laser technology, and studies related to light propagation. CO2 laser beam profile knife-edge Smartphone camera Physics Nicolas Ribeiro verfasserin aut Jader de Souza Cabral verfasserin aut Carlos Renato Menegatti verfasserin aut In Revista Brasileira de Ensino de Física Sociedade Brasileira de Física, 2004 46(2024) (DE-627)365134007 (DE-600)2111196-0 18069126 nnns volume:46 year:2024 https://doi.org/10.1590/1806-9126-rbef-2023-0370 kostenfrei https://doaj.org/article/920ad710826c43079c014b1d1049e51c kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172024000100409&tlng=en kostenfrei https://doaj.org/toc/1806-9126 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 46 2024
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In various instances, understanding the intensity profile of laser light is of paramount importance, specifically how its intensity changes along its propagation path. In this study, we introduce an economical and alternative technique for determining the waist of a Gaussian laser beam, leveraging the capabilities of a Smartphone camera. Our methodology entails directing a CO2 laser onto a thermochromic liquid crystal sheet for specific exposure duration, resulting in a color pattern that evolves over time. This evolving pattern is captured by a Smartphone camera, and selected frames from the recording are processed and analyzed to quantify the beam’s waist, denoted as w ( z ). Our measurements are compared with those obtained through the traditional knife-edge method, demonstrating a substantial degree of agreement. 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author	Gabriel de Toledo Paula
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title	Determination of a CO2 laser beam profile using a Smartphone camera
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title_full	Determination of a CO2 laser beam profile using a Smartphone camera
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title_auth	Determination of a CO2 laser beam profile using a Smartphone camera
abstract	Lasers find extensive applications across a spectrum from academic research to industrial use. In various instances, understanding the intensity profile of laser light is of paramount importance, specifically how its intensity changes along its propagation path. In this study, we introduce an economical and alternative technique for determining the waist of a Gaussian laser beam, leveraging the capabilities of a Smartphone camera. Our methodology entails directing a CO2 laser onto a thermochromic liquid crystal sheet for specific exposure duration, resulting in a color pattern that evolves over time. This evolving pattern is captured by a Smartphone camera, and selected frames from the recording are processed and analyzed to quantify the beam’s waist, denoted as w ( z ). Our measurements are compared with those obtained through the traditional knife-edge method, demonstrating a substantial degree of agreement. Furthermore, by interpolating the waists calculated through our approach, we were able to ascertain the beam waist at the focus and the focal point of a converging lens, yielding results consistent with the reference method. Our findings underscore the viability of this approach as a cost-effective alternative for characterizing Gaussian beams, with potential applications in optics, laser technology, and studies related to light propagation.
abstractGer	Lasers find extensive applications across a spectrum from academic research to industrial use. In various instances, understanding the intensity profile of laser light is of paramount importance, specifically how its intensity changes along its propagation path. In this study, we introduce an economical and alternative technique for determining the waist of a Gaussian laser beam, leveraging the capabilities of a Smartphone camera. Our methodology entails directing a CO2 laser onto a thermochromic liquid crystal sheet for specific exposure duration, resulting in a color pattern that evolves over time. This evolving pattern is captured by a Smartphone camera, and selected frames from the recording are processed and analyzed to quantify the beam’s waist, denoted as w ( z ). Our measurements are compared with those obtained through the traditional knife-edge method, demonstrating a substantial degree of agreement. Furthermore, by interpolating the waists calculated through our approach, we were able to ascertain the beam waist at the focus and the focal point of a converging lens, yielding results consistent with the reference method. Our findings underscore the viability of this approach as a cost-effective alternative for characterizing Gaussian beams, with potential applications in optics, laser technology, and studies related to light propagation.
abstract_unstemmed	Lasers find extensive applications across a spectrum from academic research to industrial use. In various instances, understanding the intensity profile of laser light is of paramount importance, specifically how its intensity changes along its propagation path. In this study, we introduce an economical and alternative technique for determining the waist of a Gaussian laser beam, leveraging the capabilities of a Smartphone camera. Our methodology entails directing a CO2 laser onto a thermochromic liquid crystal sheet for specific exposure duration, resulting in a color pattern that evolves over time. This evolving pattern is captured by a Smartphone camera, and selected frames from the recording are processed and analyzed to quantify the beam’s waist, denoted as w ( z ). Our measurements are compared with those obtained through the traditional knife-edge method, demonstrating a substantial degree of agreement. Furthermore, by interpolating the waists calculated through our approach, we were able to ascertain the beam waist at the focus and the focal point of a converging lens, yielding results consistent with the reference method. Our findings underscore the viability of this approach as a cost-effective alternative for characterizing Gaussian beams, with potential applications in optics, laser technology, and studies related to light propagation.
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title_short	Determination of a CO2 laser beam profile using a Smartphone camera
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Determination of a CO2 laser beam profile using a Smartphone camera

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