Počet záznamů: 1
Coherent Sources for Mid-Infrared Laser Spectroscopy
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SYSNO ASEP 0473085 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Coherent Sources for Mid-Infrared Laser Spectroscopy Tvůrce(i) Honzátko, Pavel (URE-Y) RID
Baravets, Yauhen (URE-Y)
Mondal, Shyamal (URE-Y)
Peterka, Pavel (URE-Y) RID
Todorov, Filip (URE-Y)Číslo článku 1014202 Zdroj.dok. 20TH SLOVAK-CZECH-POLISH OPTICAL CONFERENCE ON WAVE AND QUANTUM ASPECTS OF CONTEMPORARY OPTICS, 10142. - Bellinghem : SPIE, 2016 / Senderáková Dagmar - ISSN 0277-786X - ISBN 978-1-5106-0733-0 Poč.str. 15 s. Forma vydání Tištěná - P Akce 20th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics (SCPOC) Datum konání 05.09.2016 - 09.09.2016 Místo konání Jasna Země SK - Slovensko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Fiber Laser ; Fiber Amplifier ; CEAS Vědní obor RIV BH - Optika, masery a lasery CEP LD14112 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora URE-Y - RVO:67985882 UT WOS 000393152700001 EID SCOPUS 85011634649 DOI 10.1117/12.2263504 Anotace Mid-infrared laser absorption spectroscopy (LAS) is useful for molecular trace gas concentration measurements in gas mixtures. While the gas chromatography-mass spectrometry is still the gold standard in gas analysis, LAS offers several advantages. It takes tens of minutes for a gas mixture to be separated in the capillary column precluding gas chromatography from real-time control of industrial processes, while LAS can measure the concentration of gas species in seconds. LAS can be used in a wide range of applications such as gas quality screening for regulation, metering and custody transfer,(1) purging gas pipes to avoid explosions,(1) monitoring combustion processes,(2) detection and quantification of gas leaks,(3) by-products monitoring to provide feedback for the real-time control of processes in petrochemical industry,(4) real-time control of inductively coupled plasma etch reactors,(5,6) and medical diagnostics by means of time-resolved volatile organic compound (VOC) analysis in exhaled breath.(7) Apart from the concentration, it also permits us to determine the temperature, pressure, velocity and mass flux of the gas under observation. The selectivity and sensitivity of LAS is linked to a very high spectral resolution given by the linewidth of single-frequency lasers. Measurements are performed at reduced pressure where the collisional and Doppler broadenings are balanced. The sensitivity can be increased to ppb and sometimes to ppt ranges by increasing the interaction length in multi-pass gas cells or resonators and also by adopting modulation techniques Pracoviště Ústav fotoniky a elektroniky Kontakt Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Rok sběru 2017
Počet záznamů: 1