The research topic of air lasing is of fundamental and practical importance, which has grown
rapidly in the past decade. Air lasing, or a laser‐like emission from air species including …

Light–matter interactions can create and manipulate collective many-body phases in solids,–
, which are promising for the realization of emerging quantum applications. However, in …

Stand-off magnetometry allows measuring magnetic field at a distance, and can be
employed in geophysical research, hazardous environment monitoring, and security …

We demonstrate backward-directed continuous-wave (cw) emission at 2.21 μm generated
on the 4P_3/2-4S_1/2 population-inverted transition in Na vapors that are two-photon …

Among different approaches to generate mirrorless lasing, resonant multiphoton pumping of
gas constituents by deep-UV laser pulses exhibits so far the highest efficiency and produces …

Picosecond and femtosecond superfluorescent beatings are observed from a dense atomic
vapor. Cesium atoms are excited by femtosecond laser pulses via two-photon processes …

Intriguing collective spontaneous cascade emissions have recently been realized. In despite
of much success, a depth understanding of the complexity is still lacking. With this …

The parametric<? TeX 2pc 0pt?> and nonparametric nonlinear processes responsible<?
TeX 4pc 0pt?> for generation of directional infrared radiation in sodium<? TeX 5pc 0pt?> …

摘要在天文学领域, 利用地基大口径望远镜对天体进行高分辨率观测是研究天体物理,
星系演化等关键科学问题的重要手段. 然而, 大气湍流的扰动严重限制了地基光学望远镜的成像 …

Hydrogen-bonded mixtures with varying concentration are a complicated networked system
that demands a detection technique with both time and frequency resolutions. Hydrogen …