High-Resolution Mode-Locked Laser Rangefinder With Harmonic Downconversion
The development of new pulsed optical sources with high pulse stability allows the improvement of common contactless measurement techniques. A new two-way optical rangefinder, employing a femtosecond laser, is presented here from design to implementation. The system is based on the evaluation of the...
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| Veröffentlicht in: | IEEE transactions on instrumentation and measurement 2012-05, Vol.61 (5), p.1536-1542 |
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| container_title | IEEE transactions on instrumentation and measurement |
| container_volume | 61 |
| creator | Pesatori, A. Norgia, M. Svelto, C. Zucco, M. Stupka, M. De Marchi, A. |
| description | The development of new pulsed optical sources with high pulse stability allows the improvement of common contactless measurement techniques. A new two-way optical rangefinder, employing a femtosecond laser, is presented here from design to implementation. The system is based on the evaluation of the phase delay of the returning optical pulse train with respect to the outgoing one. The main idea is to expand the time interval corresponding to the phase delay by harmonic heterodyne downconversion of a high harmonic of the pulse repetition rate (up to 10 GHz), which is applied symmetrically to the two channels. The system has shown 10 repeatability with a resolution that improves proportionally to the number of the employed harmonic. |
| doi_str_mv | 10.1109/TIM.2012.2183437 |
| format | Article |
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A new two-way optical rangefinder, employing a femtosecond laser, is presented here from design to implementation. The system is based on the evaluation of the phase delay of the returning optical pulse train with respect to the outgoing one. The main idea is to expand the time interval corresponding to the phase delay by harmonic heterodyne downconversion of a high harmonic of the pulse repetition rate (up to 10 GHz), which is applied symmetrically to the two channels. 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A new two-way optical rangefinder, employing a femtosecond laser, is presented here from design to implementation. The system is based on the evaluation of the phase delay of the returning optical pulse train with respect to the outgoing one. The main idea is to expand the time interval corresponding to the phase delay by harmonic heterodyne downconversion of a high harmonic of the pulse repetition rate (up to 10 GHz), which is applied symmetrically to the two channels. The system has shown 10 repeatability with a resolution that improves proportionally to the number of the employed harmonic.</description><subject>Channels</subject><subject>Delay</subject><subject>Displacement measurement</subject><subject>distance measurement</subject><subject>Femtosecond</subject><subject>Harmonic analysis</subject><subject>Harmonics</subject><subject>Instrumentation</subject><subject>Lasers</subject><subject>Measurement by laser beam</subject><subject>optical components</subject><subject>optical distance measurements</subject><subject>Optical pulses</subject><subject>optical signal detection</subject><subject>Optical variables measurement</subject><subject>Phase measurement</subject><subject>Time frequency analysis</subject><subject>Time measurement</subject><subject>Trains</subject><issn>0018-9456</issn><issn>1557-9662</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpdkM1LwzAYxoMoOKd3wUvx5KUzH23SHGV-bNIhjIHHkqZvtswtmUmr-N_bseHB0_scfs_Dyw-ha4JHhGB5v5jORhQTOqKkYBkTJ2hA8lykknN6igYYkyKVWc7P0UWMa4yx4JkYoNeJXa7SOUS_6VrrXTLzDaSl1x_QJKWKEJK5cksw1jV9frftKpmosPXO6uTRfzvt3ReE2Fcv0ZlRmwhXxztEi-enxXiSlm8v0_FDmWpGWZtyBVAToQohpDZcKWwoE7k0jdKqyXXd6IzkwGvOoIaiNg03WYapVrQ2GLMhujvM7oL_7CC21dZGDZuNcuC7WBFMaVEUgskevf2Hrn0XXP9cJSXDQkpBewgfIB18jAFMtQt2q8JPv1Tt1Va92mqvtjqq7Ss3h4oFgD-ck5ySHLNfv_R1pg</recordid><startdate>201205</startdate><enddate>201205</enddate><creator>Pesatori, A.</creator><creator>Norgia, M.</creator><creator>Svelto, C.</creator><creator>Zucco, M.</creator><creator>Stupka, M.</creator><creator>De Marchi, A.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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A new two-way optical rangefinder, employing a femtosecond laser, is presented here from design to implementation. The system is based on the evaluation of the phase delay of the returning optical pulse train with respect to the outgoing one. The main idea is to expand the time interval corresponding to the phase delay by harmonic heterodyne downconversion of a high harmonic of the pulse repetition rate (up to 10 GHz), which is applied symmetrically to the two channels. The system has shown 10 repeatability with a resolution that improves proportionally to the number of the employed harmonic.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TIM.2012.2183437</doi><tpages>7</tpages></addata></record> |
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| identifier | ISSN: 0018-9456 |
| ispartof | IEEE transactions on instrumentation and measurement, 2012-05, Vol.61 (5), p.1536-1542 |
| issn | 0018-9456 1557-9662 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Channels Delay Displacement measurement distance measurement Femtosecond Harmonic analysis Harmonics Instrumentation Lasers Measurement by laser beam optical components optical distance measurements Optical pulses optical signal detection Optical variables measurement Phase measurement Time frequency analysis Time measurement Trains |
| title | High-Resolution Mode-Locked Laser Rangefinder With Harmonic Downconversion |
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