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50 Years of Nonlinear Op...
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50 Years of Nonlinear Optics and Magnetism
2017-09-08 16:24:13 | 编辑: | 【 【打印】【关闭】

Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences

中国科学院透明光功能无机材料重点实验室

50 Years of Nonlinear Optics and Magnetism

R.V. Pisarev

Ioffe Institute Russian Academy of Sciences

时间:2012年09月29日(星期六)14:00

地点: 4 号楼 14楼第一会议室

联系人:徐军 武安华

欢迎各位老师同学光临!

Pisarev 教授是约飞技术物理所半导体和电介质物理学部磁性及铁电晶体光学实验室的负责人,他1965 年在俄罗斯科学院半导体研究速配完成了博士论文答辩,1975 年获得俄罗斯科学院约飞技术物理所自然科学博士学位。先后任职于俄罗斯科学院半导体所和约飞技术物理所,1987 年起任约飞技术物理所半导体和电介质物理学部磁性及铁电晶体光学实验室的负责人,长期以来从事磁性及铁电晶体的光学性能研究。在近五十年的科学研究中,多次获得俄罗斯科学院的各项奖励,发表论文230 余篇,会议学术报告180 余次。自1994 年起,负责了9 项俄罗斯基础研究局的科研项目,与多个国家的知名研究结构建立了卓有成效的国际合作。

Pisarev教授近年来的代表性文章如下:

[1] M. Fiebig, Th. Lottermoser, D. Frohlich, A. V. Goltsev, R. V. Pisarev, Observation of coupled magnetic and electric domains, Nature (London) 419, 818 (2002)
[2] A. V. Kimel, A. Kirilyuk, A. Tsvetkov, R. V. Pisarev, Th. Rasing, Laser-induced ultrafast spin reorientation in the antiferromagnet TmFeO3, Nature (London) 429, 850 (2004).
[3] A. V. Kimel, A. Kirilyuk, P. A. Usachev, R. V. Pisarev, A. M. Balbashov, Th. Rasing, Ultrafast non-thermal control of magnetization by instantaneous photomagnetic pulses, Nature (London), 435, 655 (2005).
[4] R. V. Pisarev, I. Sänger, G. A. Petrakovskii, M. Fiebig, Magnetic-Field Induced Second Harmonic Generation in CuB2O4, Phys. Rev. Lett. 93, 037204 (2004).
[5] A. V. Kimel, B. A. Ivanov, R. V. Pisarev, P. A. Usachev, A. Kirilyuk, Th. Rasing, Inertia-driven spin switching in antiferromagnets, Nature Physics, 5, 727 (2009).

Coherent control of ultrafast light-induced magnetic phase transition in (Sm,Pr)FeO3 Orthoferrite

A. M. Kalashnikova1, J. A. de Jong2, I. Razdolski2, R. V. Pisarev1, A. M. Balbashov3,
A. Kirilyuk2, Th. Rasing2, and A. V. Kimel2
1
Ioffe Physical-Technical Institute of the Russian Academy of Sciencies, 194021 St. Petersburg, Russia
2Radboud University Nijmegen, IMM, 6525AJ Nijmegen, The Netherlands
3 Moscow Power Engineering Institute, 111250 Moscow, Russia

时间:2012年09月29日(星期六)15:30

Abstract

Nowadays ultrafast transitions between different phases of matter triggered by subpicosecond laser pulses are the subject of intense research in both fundamental and applied physics. In particular, various ultrafast laser-induced transitions between magnetic phases are considered to be promising for achieving faster magnetic data processing. One of the examples of such phase transitions is a spin reorientation phase transition (SRT) in rare-earth orthoferrites, when the rotation of magnetization by 90o occurs when the temperature is changed. Such a phase transition can be effectively triggered on a picosecond time scale by femtosecond laser pulses [1]. However, such an approach does not allow to control the phase transition, since two opposite magnetization directions in the new light-induced phase are energetically degenerate if no external magnetic field is present.

Here we present the experimental evidence for a novel ultrafast laser-induced STR fully controlled by a single laser pulse [2]. Using the single-shot time-resolved femtosecond magneto-optical microscopy we demonstrated that the ultrafast SRT occurs in the (Sm0.5Pr0.5FeO3) orthoferrite under the action of a single circularly-polarized 60 fs laser pulse in a zero magnetic field. Unexpectedly, the magnetization direction in the laser-induced new phase was determined by the helicity of the laser pulse and could be reversed by reversing it. We show that such a coherent control of the ultrafast SRT is mediated by the low-amplitude magnetization precession excited by the femtosecond laser pulse [3,4]. Importantly, this new mechanism of the coherent control of SRT allows switching between two opposite magnetization directions in the new phase by tuning also the sample temperature and the laser pulse fluence [2].

[1] A. V. Kimel et al., Nature (London) 429, 850 (2004).

[2] J. A. de Jong et al., Phys. Rev. Lett. 108, 157601 (2012).

[3] A. V. Kimel et al., Nature (London) 435, 655 (2005).

[4] A. M. Kalashnikova et al., Phys. Rev. B 78, 104301 (2007).

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