Continued development in the areas of communication, security, medicine, and safety is
calling for terahertz‐wave technologies to evolve beyond laboratory research and into the …

We investigate nonlinear THz generation from lithium niobate films and crystals of different
thicknesses by optical rectification of near-infrared femtosecond pulses. A comparison …

摘要70 多年前, 黄昆先生提出了著名的“黄昆方程” 和“声子极化激元” 的理念,
开启了极化激元研究的先河. 迄今为止, 黄昆方程作为以中国本土科学家命名的方程 …

Persistent luminescence (PersL) was found in Mg2+ and Pr3+ co-doped lithium niobate
perovskite-like single crystal. Bright red afterglow emission was observed at room …

Compact vortex beam emitters have emerged as new light sources for novel applications in
areas including spectroscopy, particle manipulation, and communications. Reported devices …

We report on optical rectification in a⟨ 110⟩ AgGaSe_2 crystal that produces terahertz
(THz) electric field pulses across the broad frequency range of 0.02–4 THz. Due to the large …

The backward difference frequency generation process is used to produce narrowband
terahertz radiation via modal phase-matching in a SiO_2-LiNbO_3-air planar waveguide …

Optical rectification is investigated in an Si-SiO 2-LiNbO 3-polymer-Si planar waveguiding
arrangement that generates and emits terahertz (THz) radiation as Cherenkov waves. Each …

We investigated the THz generation from a 500 nm lithium niobate thin film by optical
rectification of femtosecond pulses. A comparison between the numerical studies and …

A vortex beam possesses a helical phase front and carries a phase singularity along the
propagation axis. The salient properties of vortex beams, including the theoretically …