欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
最近研究表明,两束交叉激光脉冲在等离子体中传播时,可以诱导生成周期等离子体密度调制（或称等离子体布拉格光栅）.分别利用传输矩阵法和耦合模理论,推导了激光斜入射时等离子体光栅的色散关系.两种方法均表明,均匀等离子体光栅存在着光子带隙结构,并且在带隙附近有强烈的色散.当激光斜入射时,带隙结构会呈现不同的偏振特性：S偏振光的带隙宽度随着入射角的增大而逐渐变宽,而P偏振光的带隙宽度随着入射角的增大先迅速变窄,在布儒斯特角入射时带隙消失,然后又随着入射角的增大而迅速变宽.超宽的光子带隙和超高的激光损伤阈值,使得等离子体光栅有望成为一种新型的操纵强激光脉冲的光子器件.
英文摘要：
Recently, the plasma Bragg gratings induced by two intersecting laser pulses has been predicted theoretically. The dispersion relation of uniform plasma gratings under the oblique incidence of a light wave is investigated with the transfer-matrix method and the coupled-mode theory. Both approaches show that such plasma gratings exhibit a photonic band gap, near which strong dispersion appears. The photonic band gap has different polarization characteristics when the light wave is obliquely incident on the plasma grating. With the increase of the incident angle, the band gap for an S-polarized wave increases gradually, while that for a P-polarized wave decreases first rapidly, then vanishes when it approaches the Brewster angle, and finally becomes wide with the further increase of the incident angle. Since the plasma grating has an uhrabroad photonic band gap and can support an ultrahigh damage threshold of incident light waves, it has the potential to be a novel photonic device to manipulate extremely intense laser pulses.
同期刊论文项目
同项目期刊论文
Nonlinear chirp effect introduced by Kerr medium as optical switches in ultrafast time-resolved meas
Noncollinear optical parametric amplifier based femtosecond time-resolved transient fluorescence spe
Triggering and guiding of high voltage discharge by using femtosecond laser filaments with different
Efficient generation of blue light by intracavity frequency doubling of a cw Nd : YAG laser with LBO
Highly efficient and stable ring regenerative amplifier for chirped-pulse amplification at repetitio
Photoinduced charge recombination at dye-sensitized individual TiO2 nanoparticles and its applicatio
Infrared Spectroscopic Discrimination between the Loop and α-Helices and Determination of the Loop D
Intermolecular hydrogen bonds formed between amino acid molecules in aqueous solution tnvestigated b
Coherent excitons at different orientation arrangements of local transition dipole moments in circul
Absorption spectra measurements of the x-ray radiation heated SiO2 aerogel plasma in “ dog-bone” tar
Determination of the detection limit for a noncollinear optical parametric amplification-gated femto
Multi-peak emission of the fast electron beams along the target surface in ultrashort laser interact
Fast electron transport in high-intensity laser-plasma interactions diagnosed by optical and ion emi
A compact 355TW femtosecod Ti:sapphire laser facility and trend to high contrast ratio The fifth Int
Influence of initial pulse chirp on rainbow-like supercontinuum generation from filamentation in air
High-energy picosecond near-vacuum ultraviolet pulses generated by sum-frequency mixing of an amplif
Ultra-sensitive femtosecond time-resolved fluorescence spectroscopy for relaxation processes by usin
Quasistatic magnetic fields generated by a nonrelativistic intense laser pulse in uniform underdense
Generation of tens of GeV quasi-monoenergetic proton beams from a moving double layer formed by ultr
Relativistic collisional current-filamentation instability and two-stream instability in dense plasm
Self-induced magnetic focusing of proton beams by Weibel-like instability in the laser foil-plasma i
Soft x-ray emission, angular distribution of hot electrons, and absorption studies of argon clusters
Numerical simulation of acceleration and radiation of surface electrons in the interaction of intens
Plasma thermal effect on the relativistic current-filamentation and two-stream instabilities in a ho
期刊信息
位置：