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Environmental gas detection using tunable diode laser / Ahmed Barakat Hosseny Barakat ; Supervised Yehia Abdelhamid Badr

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Ahmed Barakat Hosseny Barakat , 2013Description: 152 P. : charts , facsimiles ; 25cmOther title:
  • الكشف البيئى على الغارات باستخدام ليزر الديود المولف [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (M.Sc.) - Cairo University - National Institute of Laser Enhanced - Department Laser Science and Interactions Summary: Gas detection is one of the most important issues especially, concerning monitoring pollution. Many systems were designed for monitoring: CO₂, NOx , SOx , O₃ {u2026}etc. It is amid here to design a single homemade setup for gas detection and compare it with the already existing systems. Four multipass cells are used here one of them designed in this work. Two portable laser source were used in this investigation at 532 nm (2nd harmonic of diode pumped Nd:YAG laser with power of 0-250 mW) and 445 nm high power diode laser 0-1.5 watt. Four gases were involved in the present work, NO₂, SO₂, CO₂and smoke of cigarette.NO₂ showed the best results in our investigations. We used in our investigation for detection Acton double monochromator (Acton spectrapro-500i), thorlab spectrometer (CCS100 - Compact Spectrometer, 350 - 700 nm) in addition to fast photo-diode thorlab(DET210 - HIGH-SPEED SILICON DETECTOR) provided with digital storage oscilloscope
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Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.24.12.M.Sc.2013.Ah.E (Browse shelf(Opens below)) Not for loan 01010110063849000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.24.12.M.Sc.2013.Ah.E (Browse shelf(Opens below)) 63849.CD Not for loan 01020110063849000

Thesis (M.Sc.) - Cairo University - National Institute of Laser Enhanced - Department Laser Science and Interactions

Gas detection is one of the most important issues especially, concerning monitoring pollution. Many systems were designed for monitoring: CO₂, NOx , SOx , O₃ {u2026}etc. It is amid here to design a single homemade setup for gas detection and compare it with the already existing systems. Four multipass cells are used here one of them designed in this work. Two portable laser source were used in this investigation at 532 nm (2nd harmonic of diode pumped Nd:YAG laser with power of 0-250 mW) and 445 nm high power diode laser 0-1.5 watt. Four gases were involved in the present work, NO₂, SO₂, CO₂and smoke of cigarette.NO₂ showed the best results in our investigations. We used in our investigation for detection Acton double monochromator (Acton spectrapro-500i), thorlab spectrometer (CCS100 - Compact Spectrometer, 350 - 700 nm) in addition to fast photo-diode thorlab(DET210 - HIGH-SPEED SILICON DETECTOR) provided with digital storage oscilloscope

Issued also as CD

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