典型文献
Enhancement of THz generation in LiNbO3 waveguides via multi-bounce velocity matching
文献摘要：
To realize the full promise of terahertz polaritonics(waveguide-based terahertz field generation,interaction,and readout)as a viable spectroscopy platform,much stronger terahertz fields are needed to enable nonlinear and even robust linear terahertz measurements.We use a novel geometric approach in which the optical pump is totally internally reflected to increase the distance over which optical rectification occurs.Velocity matching is achieved by tuning the angle of internal reflection.By doing this,we are able to enhance terahertz spectral amplitude by over 10x compared to conventional single-pass terahertz generation.An analysis of the depletion mechanisms reveals that 3-photon absorption and divergence of the pump beam are the primary limiters of further enhancement.This level of enhancement is promising for enabling routine spectroscopic measurements in an integrated fashion and is made more encouraging by the prospect of further enhancement by using longer pump wavelengths.
文献关键词：
中图分类号：
作者姓名：
Blake S.Dastrup;Eric R.Sung;Frank Wulf;Clara Saraceno;Keith A.Nelson
作者机构：
Department of Chemistry,Massachusetts Institute of Technology,Cambridge,MA 02139,USA;Faculty of Electrical Engineering and Information Technology,Ruhr University Bochum,Bochum 44801,Germany
文献出处：
引用格式：
[1]Blake S.Dastrup;Eric R.Sung;Frank Wulf;Clara Saraceno;Keith A.Nelson-.Enhancement of THz generation in LiNbO3 waveguides via multi-bounce velocity matching)[J].光：科学与应用（英文版）,2022(12):2994-3001
A类：
polaritonics,limiters
B类：
Enhancement,THz,generation,LiNbO3,waveguides,multi,bounce,velocity,matching,To,realize,full,promise,terahertz,interaction,readout,viable,spectroscopy,platform,much,stronger,fields,needed,enable,nonlinear,even,robust,measurements,We,use,novel,geometric,approach,which,optical,pump,totally,internally,reflected,increase,distance,over,rectification,occurs,Velocity,achieved,by,tuning,angle,reflection,By,doing,this,we,spectral,amplitude,10x,compared,conventional,single,pass,An,analysis,depletion,mechanisms,reveals,that,photon,absorption,divergence,beam,primary,further,enhancement,This,level,promising,enabling,routine,spectroscopic,integrated,fashion,made,more,encouraging,prospect,using,longer,wavelengths
AB值：
0.648315
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