典型文献
Ultrabroadband nonlinear Raman-Nath diffraction against femtosecond pulse laser
文献摘要：
Nonlinear Raman-Nath diffraction(NRND)offers an effective way to realize multiple noncollinear parametric processes based on the partially satisfied transverse phase-matching conditions in quadratic nonlinear media.Here,the realization of ultrabroadband NRND(UB-NRND)driven by a high-peak-power ultrashort femtosec-ond pump laser in two types of nonlinear crystals is reported:periodically poled lithium niobate(PPLN)and chirped PPLN(CPPLN).Multi-order ultrabroadband Raman-Nath second-harmonic(SH)signal outputs along fixed diffraction angles are simultaneously observed.This distinguished transversely phase-matched supercontin-uum phenomenon is attributed to the synergic action of natural broad bandwidth of an ultrashort femtosecond pump laser and the third-order nonlinear effect induced spectral broadening,in combination with the principal ultrabroadband noncollinear second-harmonic generation processes.The NRND process with multiple quasi-phase matching(QPM)interactions from CPPLN leads to the SH output covering a wide range of wavelengths between 389 and 997 nm and exhibiting an energy conversion efficiency several orders of magnitude higher than previous studies.This UB-NRND scheme would bring better techniques and tools for applications ranging from ultrashort pulse characterization and nondestructive identification of domain structures to accurate parameter monitoring of second-and third-order nonlinear susceptibilities within solid-state nonlinear microstructured materials.
文献关键词：
中图分类号：
作者姓名：
LIHONG HONG;BAOQIN CHEN;CHENYANG HU;ZHI-YUAN LI
作者机构：
School of Physics and Optoelectronics,South China University of Technology,Guangzhou 510641,China;Guangdong Jingqi Laser Technology Corporation Limited,Dongguan 523808,China
文献出处：
引用格式：
[1]LIHONG HONG;BAOQIN CHEN;CHENYANG HU;ZHI-YUAN LI-.Ultrabroadband nonlinear Raman-Nath diffraction against femtosecond pulse laser)[J].光子学研究（英文）,2022(04):905-912
A类：
Ultrabroadband,Nath,NRND,femtosec,CPPLN,supercontin
B类：
nonlinear,Raman,diffraction,against,femtosecond,pulse,laser,Nonlinear,offers,effective,way,realize,multiple,noncollinear,parametric,processes,partially,satisfied,phase,matching,conditions,quadratic,media,Here,realization,ultrabroadband,UB,driven,by,peak,power,ultrashort,pump,two,types,crystals,reported,periodically,poled,lithium,niobate,chirped,Multi,harmonic,SH,signal,outputs,along,fixed,angles,are,simultaneously,observed,This,distinguished,transversely,matched,uum,phenomenon,attributed,synergic,natural,bandwidth,third,induced,spectral,broadening,combination,principal,generation,quasi,QPM,interactions,from,leads,covering,wide,range,wavelengths,between,exhibiting,energy,conversion,efficiency,several,orders,magnitude,higher,than,previous,studies,scheme,would,bring,better,techniques,tools,applications,ranging,characterization,nondestructive,identification,domain,structures,accurate,parameter,monitoring,susceptibilities,within,solid,state,microstructured,materials
AB值：
0.55834
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