Laser-induced plasma spectroscopy (LIPS): a tool for in situ spectroscopic characterization of aerosol mercury and chromium

Summary form only given. Laser-induced plasma spectroscopy (LIPS) is a laser-based sensitive optical diagnostic technique to detect a wide variety of atomic and molecular species. We have used the fundamental wavelength along with frequency doubled and quadrupled wavelengths from a Q-switched Nd:YAG laser to produce plasma in an aerosol spray under one-atmosphere pressure conditions. The experiments were performed using 1064, 532, and 266 nm wavelengths independently to understand the effects of wavelength on the generation of plasma and the detection of aerosol particles.