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Trace Gas Detection from Plant Leaves, Flowers and Seeds Using Conventional and Photothermal Light Deflection Spectroscopy
Photothermal Deflection Spectroscopy Deflection Spectroscopy Trace Detection
2013/1/30
Photothermal deflection spectroscopy is a method used indirectly to measure optical absorption of a sample. Different techniques can be employed to measure the amount of deflection, hence evaluate opt...
Blue laser diodes for trace matter detection
trace matter detection cavity ring down spectroscopy GaN laser diodes
2011/5/9
We present spectroscopic applications of GaN-based laser diodes (LDs), fabricated and developed
at the Institute of High Pressure Physics and its spin-off company TopGaN. LDs were
manufactured using...
Trace Methane Detection Based on Raman Spectroscopy Using a High Finesse Optical Resonator
Raman spectroscopy Methane detection Gas sensor
2009/6/8
A Raman spectroscopy-based gas sensor employing a high-finesse simple diode laser pumped external cavity, Power Build-up Cavity (PBC), has been developed. Results show that a compact 10-cm-long PBC in...
Rapid detection of trace chloroethylenes using laser mass spectrometry
laser mass spectrometry resonance-enhanced multiphoton ionization
2011/4/26
Laser mass spectrometry is a new chemical trace analysis method with high selectivity, sensitivity and speed. The mass-resolved resonance-enhanced multiphoton ionization (REMPI) spectra of chloroethyl...