Optimized terahertz-wave generation using BNA-DFG

Optimized terahertz-wave generation using BNA-DFG.

An effective and widely tunable means of producing terahertz (THz) radiation using difference-frequency generation (DFG) in an organic N-benzyl-2-methyl-4-nitroaniline (BNA) crystal was demonstrated by optimizing the pump wavelengths. We calculated the (wideband) refractive index and coherence length mapping of BNA to establish the optimum phase-matching condition of the DFG configuration. To s...

Terahertz wave generation by plasmonic-enhanced difference-frequency generation

Yuanxun Ge, Jianjun Cao, Zhenhua Shen, Yuanlin Zheng, Xianfeng Chen, and Wenjie Wan* Department of Physics, The State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240, China University of Michigan–Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China *Corresponding author: wenjie....

Enhancement of terahertz wave generation from laser induced plasma

Ultrabright continuously tunable terahertz-wave generation at room temperature

The hottest frequency region in terms of research currently lies in the 'frequency gap' region between microwaves and infrared: terahertz waves. Although new methods for generating terahertz radiation have been developed, most sources cannot generate high-brightness terahertz beams. Here we demonstrate the generation of ultrabright terahertz waves (brightness ~0.2 GW/sr·cm(2), brightness temper...

Cherenkov Phase Matched Monochromatic Tunable Terahertz Wave Generation

Terahertz (THz) waves present attractive possibilities in advanced applications including biomedical analysis and stand-off detection for hazardous materials. The development of monochromatic and tunable coherent THz-wave sources is of great interest for use in these applications. Recently, a parametric process based on second-order nonlinearities was used to generate tunable monochromatic cohe...