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We report on generation of strong-field-ionization induced free-space air lasers and explore their applications in remote sensing and molecular physics.
We experimentally investigate gain dynamics and temporal characteristics of a free-space nitrogen laser pumped by circularly-polarized femtosecond laser pulses based on the pump-probe scheme.
The effects of organic–inorganic amendments and nitrogen‐phosphorus (NP) fertilization (NH4NO3 plus Ca (H2PO4)2) on ryegrass (Lolium rigidum) growth, and nitrogen (N) and phosphorus (P) availability in highly alkaline bauxite‐processing residue sand (BRS), were examined in a pot experiment. The BRS used was either unamended (control) or amended with organic (e.g. greenwaste compost and biochar) or...
We report on diagnostics of rotational wavepackets coherently generated in strong-field-ionized nitrogen molecules with a seed-amplified air lasing scheme, and the first observation on Raman scattering of neutral nitrogen molecules with such an “air laser”.
Contents of soil organic matter (SOM) and total nitrogen (TN) were measured in Nanjishan wetland of Poyang Lake, China, in 2009. Three types of soil from Ass. Triarrhera lutarioriparia , Ass. Carex cinerascens and Ass. Eleocharis valleculosa were analyzed along water gradients. Results showed that spatial distributions of both SOM and TN were very similar in soil profiles (0-100 cm) of the three areas...
Amount of nitrogen (N) dry deposition on the leaf surface of oak and cedar was compared using throughfall method and foliar rinsing method. The study was conducted at FM Tamakyuryo, located at the northeast edge of the Tama Rolling Hills, Tokyo, Japan. The throughfall method showed that the total N deposition were 19.7, 19.1, and 50.6 kg N ha−1 year−1 for open bulk deposition and total deposition...
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