High Repetition Rate Mid-Infrared Differential Absorption Lidar for Atmospheric Pollution Detection
نویسندگان
چکیده
منابع مشابه
Remote measurement of atmospheric mercury using differential absorption lidar.
Atomic mercury in the atmosphere was detected by the differential-absorption lidar technique. Laser light at the mercury resonance wavelength of 253.65 nm was generated by anti-Stokes shifting in H(2) of the frequency-doubled output from a Nd:YAG-pumped dye laser. The measurements demonstrate that a concentration of 4 ng/m(3), corresponding to a typical background value, can be detected if a pa...
متن کاملAtmospheric atomic mercury monitoring using differential absorption lidar techniques.
Three-dimensional mapping of atmospheric atomic mercury has been performed with lidar techniques, to our knowledge, for the first time. Industrial pollution monitoring, as well as measurements of background concentrations, is reported. High-efficiency frequency doubling of narrowband pulsed dye laser radiation was employed to generate intense radiation at the mercury UV resonance line. Field me...
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surfaces are free of dangling bonds, allows the direct growth of a highly lattice-mismatched system. [ 11 ] Meanwhile, epilayer is perfectly relaxed without excessive strain in the heterointerface since overlayer interacts with substrate through weak van der Waals (vdW) force. vdWE has been successfully used to grow single-crystalline organic molecules on graphene or boron nitride (BN). [ 12 ] ...
متن کاملTowards quantitative atmospheric water vapor profiling with differential absorption lidar.
Differential Absorption Lidar (DIAL) is a powerful laser-based technique for trace gas profiling of the atmosphere. However, this technique is still under active development requiring precise and accurate wavelength stabilization, as well as accurate spectroscopic parameters of the specific resonance line and the effective absorption cross-section of the system. In this paper we describe a nove...
متن کاملHigh-power sub-two-cycle mid-infrared pulses at 100â••MHz repetition rate
Powerful coherent light with a spectrum spanning the mid-infrared (MIR) spectral range is crucial for a number of applications in natural as well as life sciences, but so far has only been available from large-scale synchrotron sources1. Here we present a compact apparatus that generates pulses with a sub-two-cycle duration and with an average power of 0.1 W and a spectral coverage of 6.8–16.4 ...
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ژورنال
عنوان ژورنال: Sensors
سال: 2020
ISSN: 1424-8220
DOI: 10.3390/s20082211