The generation of continuous spectrum centered at 400 nm from solid thin plates is demonstrated in this work.A continuum covering 365 nm to 445 nm is obtained when 125-µJ frequency-doubled Ti:sapphire laser pulse...The generation of continuous spectrum centered at 400 nm from solid thin plates is demonstrated in this work.A continuum covering 365 nm to 445 nm is obtained when 125-µJ frequency-doubled Ti:sapphire laser pulses are applied to six thin fused silica plates at 1-kHz repetition rate.The generalized nonlinear Schrodinger equation simplified for forward propagation is solved numerically,the spectral broadening with the experimental parameters is simulated,and good agreement between simulated result and experimental measurement is achieved.The variation of electron density in the thin plate and the advantage of a low electron density in the spectral broadening process are discussed.展开更多
The simplicity and low-cost way to improve qualitative and quantitative analytical performance has always been a crucial concern for laser-induced breakdown spectroscopy(LIBS),and many scientists have been engaged in ...The simplicity and low-cost way to improve qualitative and quantitative analytical performance has always been a crucial concern for laser-induced breakdown spectroscopy(LIBS),and many scientists have been engaged in this evolving research direction.In this review,we investigated an update on recent developments in light-field modulated operation in LIBS.It covered a brief description of LIBS,optical polarization,and beam shaping.Here,the optical polarization is divided into laser beam polariza-tion and plasma polarization.In addition,the methodology and develop-ment of light-field modulated LIBS were summarized and discussed.Finally,the existing problems with light-field modulated LIBS were presented,along with some of their own insights and the future direction of their development.This review will provide a guideline for LIBS researchers with basic knowledge,which is very useful in the signal opti-mization of LIBS research and applications.展开更多
基金supported by the National Key Research and Development Program of China(Grant No.2017YFB0405202),the Major Program of the National Natural Science Foundation of China(Grant No.61690221)the General Program of the National Natural Science Foundation of China(Grant No.11774277).
文摘The generation of continuous spectrum centered at 400 nm from solid thin plates is demonstrated in this work.A continuum covering 365 nm to 445 nm is obtained when 125-µJ frequency-doubled Ti:sapphire laser pulses are applied to six thin fused silica plates at 1-kHz repetition rate.The generalized nonlinear Schrodinger equation simplified for forward propagation is solved numerically,the spectral broadening with the experimental parameters is simulated,and good agreement between simulated result and experimental measurement is achieved.The variation of electron density in the thin plate and the advantage of a low electron density in the spectral broadening process are discussed.
基金supported by the National Natural Science Foundation of China(No.61575030)the Scientific Research Foundation of Zhejiang A&F University,China(Nos.2022LFR030,2022LFR050,and 2024LFR047).
文摘The simplicity and low-cost way to improve qualitative and quantitative analytical performance has always been a crucial concern for laser-induced breakdown spectroscopy(LIBS),and many scientists have been engaged in this evolving research direction.In this review,we investigated an update on recent developments in light-field modulated operation in LIBS.It covered a brief description of LIBS,optical polarization,and beam shaping.Here,the optical polarization is divided into laser beam polariza-tion and plasma polarization.In addition,the methodology and develop-ment of light-field modulated LIBS were summarized and discussed.Finally,the existing problems with light-field modulated LIBS were presented,along with some of their own insights and the future direction of their development.This review will provide a guideline for LIBS researchers with basic knowledge,which is very useful in the signal opti-mization of LIBS research and applications.
