1Shandong Provincial Key Laboratory of Laser Polarization andInformation Technology, Department of Physics, Qufu Normal University,Qufu 2731652Department of Physics, Shanghai Jiaotong University, Shanghai 2002403Beijing National Laboratory for Condensed Matters, Institute ofPhysics, Chinese Academy of Sciences, Beijing 100080
Generation of Broadband High Harmonics through Linear Mode Conversion in Inhomogeneous Plasmas
1Shandong Provincial Key Laboratory of Laser Polarization andInformation Technology, Department of Physics, Qufu Normal University,Qufu 2731652Department of Physics, Shanghai Jiaotong University, Shanghai 2002403Beijing National Laboratory for Condensed Matters, Institute ofPhysics, Chinese Academy of Sciences, Beijing 100080
The generation of high order harmonics from an inhomogeneous ovderdense plasma target irradiated by an ultrashort intense laser pulse is studied by numerical simulation. During such interaction, ultrafast electron bunches are generated and excite electron plasma oscillations as they pass through the overdense target. These plasma oscillations will emit high-frequency electromagnetic emission by linear mode conversion. Instead of the integer harmonics generation, the emission appears with a broadband and even continuous spectrum corresponding to the electron plasma frequency range of the inhomogeneous plasma density.
The generation of high order harmonics from an inhomogeneous ovderdense plasma target irradiated by an ultrashort intense laser pulse is studied by numerical simulation. During such interaction, ultrafast electron bunches are generated and excite electron plasma oscillations as they pass through the overdense target. These plasma oscillations will emit high-frequency electromagnetic emission by linear mode conversion. Instead of the integer harmonics generation, the emission appears with a broadband and even continuous spectrum corresponding to the electron plasma frequency range of the inhomogeneous plasma density.
XU Hui;SHENG Zheng-Ming;ZHENG Jun;XIA Yun-Jie. Generation of Broadband High Harmonics through Linear Mode Conversion in Inhomogeneous Plasmas[J]. 中国物理快报, 2010, 27(4): 45201-045201.
XU Hui, SHENG Zheng-Ming, ZHENG Jun, XIA Yun-Jie. Generation of Broadband High Harmonics through Linear Mode Conversion in Inhomogeneous Plasmas. Chin. Phys. Lett., 2010, 27(4): 45201-045201.
[1] Bulanov S V, Naumova N M and Pegoraro F 1994 Phys. Plasmas 1 745 [2] Gibbon P and Förster E 1996 Plasma Phys. Controlled Fusion 38 769 [3] Pukhov A 2003 Rep. Prog. Phys. 66 47 [4] Yoshitama H, Kameshima T, GU Y Q, Guo Y, Jiao C H, Liu H J, Peng H S, Tang C M, Wang X D, Wen X L, Wen T S, Wu Y C, Zhang B H, Zhu Q H, Huang X J, An W M, Huang W H, Tang C X, Lin Y Z, Wang X D, Chen L M, Kotaki H, Kando M and Nakajima K 2008 Chin. Phys. Lett. 25 2938 [5] Jin Z Y, Shen B F, Zhang X M, Wang F C, Wen M, Ji L L, Xu J C and Wang W P 2009 Chin. Phys. Lett. 26 125204 [6] von der Linde D, Engers T, Jenke G, Agostini P, Grillon G, Nibbering E, Mysyrowicz A and Antonetti A 1995 Phys. Rev. A 52 R25 [7] Norreys P A, Zepf M, Moustaizis S, Fews A P, Zhang J, Lee P, Bakarezos M, Danson C N, Dyson A, Gibbon P, Loukakos P, Neely D, Walsh F N, Wark J S and Dangor A E 1996 Phys. Rev. Lett. 76 1832 [8] Zepf M, Tsakiris G D, Pretzler G, Watts I, Chambers D M, Norreys P A, Andiel U, Dangor A E, Eidmann K, Gahn C, Machacek A, Wark J S and Witte K 1998 Phys. Rev. E 58 R5253 [9] Tarasevitch A, Orisch A, von der Linde D, Balcou Ph, Rey G, Chambaret J-P, Teubner U, Klöpfel D and Theobald W 2000 Phys. Rev. A 62 023816 [10] Teubner U, Pretzler G, Schlegel Th, Eidmann K, Förster E and Witte K 2003 Phys. Rev. A 67 013816 [11] Monot P, Doumy G, Dobosz S, Perdrix M, D'Oliveira P, Quéré F, Réau F, Martin Ph, Audebert P, Gauthier J-C and Geindre J-P 2004 Opt. Lett. 29 893 [12] Teubner U and Gibbon P 2009 Rev. Mod. Phys. 81 445 [13] Lichters R and Meyer-ter-Vehn J 1996 Multiphonton Process (Bristol: Institute of Physics Publishing) p 221 Lichters R 1997 PhD thesis (Technical University München) [14] Teubner U, Altenbernd D, Gibbon P, Förster E, Mysyrowicz A, Audebert P, Geindre J P, Gauthier J C, Lichters R and Meyer-ter-Vehn J 1997 Opt. Commun. 144 217 [15] Kunzl Th, Lichters R and Meyer-ter-Vehn J 2003 Laser Part. Beams 21 583 [16] Kruer W L 1998 The Physics of Laser Plasma Interaction (New York: Addison-Wesley) [17] Teubner U, Eidmann K, Wagner U, Andiel U, Pisani F, Tsakiris G D, Witte K, Meyer-ter-Vehn J, Schlegel T and Förster E 2004 Phys. Rev. Lett. 92 185001 Eidmann K, Kawachi T, Marcinkevivc}ius A, Bartlome R, Tsakiris G D, Witte K and Teubner U 2005 Phys. Rev. E 72 {036413} [18] Thaury C, QuéréF, Geindre J-P, Levy A, Ceccotti T, Monot P, Bougeard M, Réau F, d'Oliveira P, Audebert P, Marjoribanks R and Martin Ph 2007 Nature Phys. 3 424 [19] QuéréF, Thaury C, Monot P, Dobosz S, Martin Ph, Geindre J P and Audebert P 2006 Phys. Rev. Lett. 96 125004 [20] Sheng Z M, Mima K, Zhang J and Sanuki H 2005 Phys. Rev. Lett. 94 095003 Sheng Z M, Mima K and Zhang J 2005 Phys. Plasmas 12 \hrefhttp://dx.doi.org/10.1063/1.2136107}{123103} [21] Bourdier A 1983 Phys. Fluids 26 1804 [22] Lichters R, Meyer-ter-Vehn J and Pukhov A 1996 Phys. Plasmas 3 3425 [23] Sheng Z M, Sentoku Y, Mima K, Zhang J, Yu W and Meyer-ter-Vehn J 2000 Phys. Rev. Lett. 85 5340
2010, Vol. 27 
