Frequency-doubled diode laser for ultraviolet absorption spectroscopy at 325 nm

2003 ◽  
Vol 83 (5) ◽  
pp. 845-847 ◽  
Author(s):  
Toni Laurila ◽  
Rolf Hernberg
Keyword(s):  
Diode Laser ◽  
Absorption Spectroscopy ◽  
Ultraviolet Absorption ◽  
Ultraviolet Absorption Spectroscopy

All-diode-laser ultraviolet absorption spectroscopy for sulfur dioxide detection

2005 ◽  
Vol 80 (8) ◽  
pp. 1021-1025 ◽  
Author(s):  
G. Somesfalean ◽  
Z. G. Zhang ◽  
M. Sjöholm ◽  
S. Svanberg
Keyword(s):  
Sulfur Dioxide ◽  
Diode Laser ◽  
Absorption Spectroscopy ◽  
Ultraviolet Absorption ◽  
Ultraviolet Absorption Spectroscopy

Absorption Cross Section Simulation: a Preliminary Study of Ultraviolet Absorption Spectroscopy for Ozone Gas Measurement

2013 ◽  
Vol 64 (3) ◽  
Author(s):  
Tay Ching En Marcus ◽  
Michael David ◽  
Maslina Yaacob ◽  
Mohd Rashidi Salim ◽  
Mohd Haniff Ibrahim ◽  
...  
Keyword(s):  
Cross Section ◽  
Absorption Spectroscopy ◽  
Absorption Cross Section ◽  
Ultraviolet Absorption ◽  
Ultraviolet Region ◽  
Slight Variation ◽  
Absorption Cross ◽  
Peak Absorption ◽  
Ultraviolet Absorption Spectroscopy ◽  
Preliminary Study

Preliminary study to measure gaseous ozone concentration using ultraviolet absorption spectroscopy is presented. Firstly, background of ozone is introduced. Next, fundamental theory behind ultraviolet absorption spectroscopy is discussed based on Beer-Lambert’s Law and absorption spectrum of ozone. After that, absorption cross section of ozone is simulated via spectralcalc.com. Temperature of system is varied. Peak absorption cross section and peak absorption wavelength are found to be 1.166 ´ 10-21 m2 molecule-1 and 255.376 nm respectively at 300 K and 0 torr. Absorption cross section in ultraviolet region shows slight variation of at most 1.286 per cent when temperature is changed from 200 K to 300 K. Around room temperature, peak absorption cross section simulated in current work is consistent with previous work, because relative error is found to be small in between 1.630 per cent and 3.087 per cent. Unlike previous work, absorption of light by ozone is detected in ultraviolet region only due to weak absorption in visible region.

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