Broadband gas phase absorber detection and quantification by chirped laser dispersion spectroscopy at 1.55 µm
The demonstration and first evaluation of chirped laser dispersion spectroscopy (CLaDS) for quantitative measurements of gas molecules with broad spectral features is reported. The demonstration is conducted on propyne (methyl acetylene) gas, using a widely tunable external cavity near infrared lase...
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| Veröffentlicht in: | Optics letters 2022-07, Vol.47 (13), p.3139-3142 |
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| container_title | Optics letters |
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| creator | Macleod, Neil A. Huggard, Peter G. Henry, Manju Weidmann, Damien |
| description | The demonstration and first evaluation of chirped laser dispersion spectroscopy (CLaDS) for quantitative measurements of gas molecules with broad spectral features is reported. The demonstration is conducted on propyne (methyl acetylene) gas, using a widely tunable external cavity near infrared laser, λ ≈ 1.55 µm, whose frequency can be swept at 2.6 MHz/µs. A direct baseband downconversion scheme is implemented to recover molecular dispersion, with a cost-effective 32 GHz radio frequency architecture. Laboratory tests demonstrate in particular the value of laser dispersion spectroscopy for the sensing of turbid media with a large range of variations, owing to a significant immunity of the detection scheme to variations in received optical power. Normalized minimum concentration measurable in the 1.5 ms scan is ∼0.7 ppm.m.√Hz |
| doi_str_mv | 10.1364/OL.460768 |
| format | Article |
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The demonstration is conducted on propyne (methyl acetylene) gas, using a widely tunable external cavity near infrared laser, λ ≈ 1.55 µm, whose frequency can be swept at 2.6 MHz/µs. A direct baseband downconversion scheme is implemented to recover molecular dispersion, with a cost-effective 32 GHz radio frequency architecture. Laboratory tests demonstrate in particular the value of laser dispersion spectroscopy for the sensing of turbid media with a large range of variations, owing to a significant immunity of the detection scheme to variations in received optical power. 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The demonstration is conducted on propyne (methyl acetylene) gas, using a widely tunable external cavity near infrared laser, λ ≈ 1.55 µm, whose frequency can be swept at 2.6 MHz/µs. A direct baseband downconversion scheme is implemented to recover molecular dispersion, with a cost-effective 32 GHz radio frequency architecture. Laboratory tests demonstrate in particular the value of laser dispersion spectroscopy for the sensing of turbid media with a large range of variations, owing to a significant immunity of the detection scheme to variations in received optical power. Normalized minimum concentration measurable in the 1.5 ms scan is ∼0.7 ppm.m.√Hz</description><subject>Acetylene</subject><subject>Broadband</subject><subject>Dispersion</subject><subject>Infrared lasers</subject><subject>Laboratory tests</subject><subject>Vapor phases</subject><issn>0146-9592</issn><issn>1539-4794</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNpd0L1OwzAQAGALgUQpDLyBJRYYUs6_sUdA_EmRusAc2Y5DU6VxaidDH4wX4MlIWyYmn3zfne4OoWsCC8Ikv18WCy4hl-oEzYhgOuO55qdoBoTLTAtNz9FFSmsAkDljM9Q9xmAqa7oKf5mE-5VJHhubQrQ-4soP3g1N6PAebEfTDU3dOHP4sjvsVk3sfYXbqWrSTep9TPvcFLghhuRCv8NmwGQhBP753lyis9q0yV_9vXP0-fL88fSWFcvX96eHInOUgMrqWjhhcq-FpY7QilLJFeTCel7Z3ObgCHCuNHDvLGPeGQXaS6KocQo4YXN0e-zbx7AdfRrKTZOcb1vT-TCmkkrFQSst1ERv_tF1GGM3TXdQFDTVMKm7o3LTVin6uuxjszFxVxIo95cvl0V5vDz7BdFQdgU</recordid><startdate>20220701</startdate><enddate>20220701</enddate><creator>Macleod, Neil A.</creator><creator>Huggard, Peter G.</creator><creator>Henry, Manju</creator><creator>Weidmann, Damien</creator><general>Optical Society of America</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-0178-7904</orcidid></search><sort><creationdate>20220701</creationdate><title>Broadband gas phase absorber detection and quantification by chirped laser dispersion spectroscopy at 1.55 µm</title><author>Macleod, Neil A. ; Huggard, Peter G. ; Henry, Manju ; Weidmann, Damien</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2108-ff5c5a7e95b2c12d22648075be4db7b70c10448904ecb33eca809e6182ac80413</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Acetylene</topic><topic>Broadband</topic><topic>Dispersion</topic><topic>Infrared lasers</topic><topic>Laboratory tests</topic><topic>Vapor phases</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Macleod, Neil A.</creatorcontrib><creatorcontrib>Huggard, Peter G.</creatorcontrib><creatorcontrib>Henry, Manju</creatorcontrib><creatorcontrib>Weidmann, Damien</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Optics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Macleod, Neil A.</au><au>Huggard, Peter G.</au><au>Henry, Manju</au><au>Weidmann, Damien</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Broadband gas phase absorber detection and quantification by chirped laser dispersion spectroscopy at 1.55 µm</atitle><jtitle>Optics letters</jtitle><date>2022-07-01</date><risdate>2022</risdate><volume>47</volume><issue>13</issue><spage>3139</spage><epage>3142</epage><pages>3139-3142</pages><issn>0146-9592</issn><eissn>1539-4794</eissn><abstract>The demonstration and first evaluation of chirped laser dispersion spectroscopy (CLaDS) for quantitative measurements of gas molecules with broad spectral features is reported. 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| ispartof | Optics letters, 2022-07, Vol.47 (13), p.3139-3142 |
| issn | 0146-9592 1539-4794 |
| language | eng |
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| source | Optica Publishing Group Journals |
| subjects | Acetylene Broadband Dispersion Infrared lasers Laboratory tests Vapor phases |
| title | Broadband gas phase absorber detection and quantification by chirped laser dispersion spectroscopy at 1.55 µm |
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