A Review of Photothermal Detection Techniques for Gas Sensing Applications

被引：28
作者：
Krzempek, Karol [1 ]
机构：
[1] Wroclaw Univ Sci & Technol, Fac Elect, Laser & Fiber Elect Grp, Wybrzeze Wyspianskiego 27, PL-50370 Wroclaw, Poland
来源：
APPLIED SCIENCES-BASEL | 2019年 / 9卷 / 14期
关键词：
photothermal spectroscopy; gas sensing; detection limit; laser spectroscopy; practical applications; intracavity gas detection; interferometric gas detection; LASER-ABSORPTION-SPECTROSCOPY; HOLLOW ANTIRESONANT FIBERS; PHOTONIC BANDGAP FIBER; WAVELENGTH MODULATION; LEAK DETECTION; METHANE; INTERFEROMETER; GENERATION; FREQUENCY;
D O I：
10.3390/app9142826
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Photothermal spectroscopy (PTS) is a technique used for determining the composition of liquids, solids and gases. In PTS, the sample is illuminated with a radiation source, and the thermal response of the analyte (e.g., refractive index) is analyzed to gain information about its content. Recent advances in this unique method of detecting gaseous samples show that photothermal gas spectroscopy can be an interesting alternative to commonly used absorption techniques. Moreover, if designed properly, sensors using PTS detection technique can not only reach sensitivities comparable with other, more complex techniques, but can significantly simplify the design of the sensor. In this review, recent developments in photothermal spectroscopy of gases will be summarized and discussed.
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页数：19
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