Generation of short pulse THz radiation by interaction between ultra short pulse laser and magnetized plasmas

通过超短脉冲激光与磁化等离子体之间的相互作用产生短脉冲太赫兹辐射

• 批准号: 14580513
• 负责人: YUGAMI Noboru
• 金额: $ 2.3万
• 依托单位: Utsunomiya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14580513/
• 关键词: terahertz; electromagnetic wave; short pulse radiation; laser; magnetized plasma

The oscillating current in the plasma can generate the emission of radiation. Because the electron plasma wave in the plasma oscillates with the plasma frequency, which is proportional to the square root of plasma density, we can expect the high frequency radiation from the plasma. However, the emitted radiation is strongly damped due to the cutoff. We applied the magnetic field to the plasma and we observed the radiation with pulse duration of 200ps and in the microwave frequency region.

等离子体中的振荡电流可以产生辐射。由于等离子体中的电子等离子体波随等离子体频率振荡，而等离子体频率与等离子体密度的平方根成正比，因此我们可以预期等离子体会产生高频辐射。然而，由于截止，发射的辐射受到强烈的阻尼。我们对等离子体施加磁场，观察到脉冲持续时间为200ps的微波频段辐射。

项目成果

D.Dorranian et al.: "Radiation from high-intensity ultrashort-laser-pulse and gas-jet magnetized plaasma interaction"Physical Review E. 68. 026409 (2003)

D.Dorranian 等人：“来自高强度超短激光脉冲和气体喷射磁化等离子体相互作用的辐射”物理评论 E. 68. 026409 (2003)

N.Andreev, Y.Nishida, N.Yugami: "Propagation of short intense laser pulses in gas-filled capillaries"Phys. Rev. E.. 65. 056407-1-056407-10 (2002)

N.Andreev、Y.Nishida、N.Yugami：“短强激光脉冲在充气毛细血管中的传播”Phys。

Md.Kamal-Al-Hassan et al.: "Excitation of ion-wave wakefield the resonant absorption of a short pulsed microwave with plasma"Physical Review E. 68. 036404 (2003)

Md.Kamal-Al-Hassan 等人：“离子波尾场的激发，短脉冲微波与等离子体的共振吸收”物理评论 E. 68. 036404 (2003)

Md.Kamal-Al-Hassan et al.: "Observation of ion wave streamers and low frequency sheath instability by the resonant absorption due to nonlinear interaction of microwave-plasma"Phiys.Plasmas. 11. 836 (2004)

Md.Kamal-Al-Hassan 等人：“通过微波-等离子体非线性相互作用的共振吸收来观察离子波流束和低频鞘层不稳定性”Phiys.Plasmas。

Noboru Yugami et al.: "Slicing off and Adding up to Short Microwave Pulse by Laser Produced Plasma"Jpn. J. Appl. Phys.. 41. L855-L857 (2002)

Noboru Yugami 等人：“通过激光产生的等离子体切割并叠加短微波脉冲”Jpn。