Atmospheric clusters play a key role in atmospheric new particle formation and they are sensitive indicator for chemistry. Both the loss of include complex set interlinked physical chemical processes, therefore their dynamics is highly non-linear. Here we derive simple equations to estimate cluster concentrations size ranges 1.5–2 nm 2–3 as well 3–6 aerosol particles. We compared estimated with...

A single-resonant low-threshold type-I β-Ba2BO4 (BBO) optical parametric oscillator (OPO) with tunable output from 410 nm to 630 at 5 kHz repetition rate is reported. By taking the noncollinear phase matching method, OPO operation could be obtained compared configuration of collinear matching, and maximum optical–optical conversion efficiency 11.8% was achieved 500 wavelength when 0.4 mJ pump p...