Dear Colleague, 

I am pleased to announce a postdoctoral position available in my group at
 Kyoto University,with a focus on theoretical/experimental nonlinear optics an

d quantum optics including ultrafast phenomena.  The detailed description is g

iven below.  

1.   Institution: Institute of Advanced Energy, Kyoto University (Japan)

2.   Supervisor: Prof. Takashi Nakajima

3.   Field: 
     [Theory]   nonlinear optics, quantum optics, ultrafast phenomena

     [Experiment] coherent control using ns~fs pulses

4.   Required Background: Ph.D. in physics,chemistry, or engineering
     with a speciality related to laser spectroscopy or optics

4.   Term:  1 year (updatable for the 2nd year)

5.   Deadline of Application: as soon as possible 

If you are interested, please contact Prof. Takashi Nakajima with your
 Curriculum Vitae and Publicatoin List at
                 nakajima@iae.kyoto-u.ac.jp 

Distortion and control of Rydberg spectra by laser fields 
Takashi Nakajima 1997 J. Phys. B: At. Mol. Opt. Phys. 30 2609-2622   doi: 10.1088/0953-4075/30/11/013  
   PDF (178 KB) | Gzipped PS (138 KB) | References

Takashi Nakajima
The Institute of Physical and Chemical Research (RIKEN), 2-1 Hirosawa, Wako, Saitama, 351-01, Japan 
Abstract. Photoexcitation of bound Rydberg states by laser fields is investigated. First, we consider perturbed Rydberg series. A set of density matrix equations including dephasing terms is presented using a two-channel model. Higher-order rate equations are also derived from a full set of density matrix equations. Second, we consider unperturbed Rydberg series and replace the intra-atomic configuration interaction term, which exists for perturbed Rydberg series, by a dipole coupling, and show that similar interference effects can be observed for unperturbed Rydberg series due to the external field. The position and the degree of asymmetry of the Rydberg spectra is found to be controllable in this case by the choice of the laser intensities and detunings. Illustrative numerical results are also presented. 
Print publication: Issue 11 (14 June 1997)
Received 2 January 1997, in final form 11 March 1997
学术报告：Quantum Path Interferences in HHG
2007-12-14 11:37:49      浙江大学光学研究所
学术报告：Quantum Path Interferences in HHG

时间：12月14日（周五）16：00

地点：玉泉校区小教七光学研究所205教室

法国CELIA-Bordeaux大学 Eric Cormier教授的学术报告

关于Quantum Path Interferences in HHG (High Harmonic Generation)

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Vol. 8, No. 1, 1998  Laser Physics 
The Proceedings of the Sixth International Workshop on Laser Physics 
(LPHYS’97), Prague, August 4-8, 1997 
Modern Trends in Laser Physics 
Quantum Optics of a Single Atom 
H. Walther p. 1  abstract 
Coherent Control of Photoabsorption: Application to Real Atoms 
Takashi Nakajima, Jian Zhang, and P. Lambropoulos, p. 29  abstract
Strong Field Phenomena 
Electron Spectra of Above-Threshold Ionization in Elliptically Polarized Laser Fields 
W. Becker, M. Kleber, A. Lohr, G. G. Paulus, H. Walther, and F. Zacher p. 56  abstract 
Correlation, Energy Sharing, and Formation of the “Knee” in Nonsequential Double Ionization 
of He in Intense Laser Fields 
A. Becker and F. H. M. Faisal p. 69  abstract 
Coulomb Correction to the Volkov Solution 
J. Bauer  p. 76  abstract 
Photoelectron Energy Spectra in Photodetachment Assisted by a Bichromatic Low-Frequency Field 
S. Bivona, R. Burlon, and C. Leone p. 78  abstract 
Interference Stabilization of Rydberg Atoms: Analytical Investigation and Numerical Simulations 
O. V. Tikhonova, E. A. Volkova, A. M. Popov, and M. V. Fedorov p. 85  abstract 
Wave Packet Motion in Relativistic Electric Fields 
Q. Su, B. A. Smetanko, and R. Grobe p. 93  abstract 
Laser-Assisted Scattering of Polarized Electrons at High Field Intensities 
C. Szymanowski, R. Taïeb, and A. Maquet p. 102  abstract 
Nuclear Excitation and Decay at the Superstrong Laser Field 
M. Yu. Romanovsky p. 107  abstract 
Dynamics of a Molecular Hydrogen Ion in Infrared Laser Fields 
A. M. Popov, O. V. Tikhonova, and E. A. Volkova p. 116  abstract 
The Role of Electrons in Laser-Induced Explosion of Diatomic Molecules and Small Clusters 
M. Brewczyk p. 124  abstract 
Intense Field Photoelectron Emission, and High Harmonic Generation From Crystal Surfaces 
and Quantum-Wells 
F. H. M. Faisal, J. Z.´Kaminski, and S. S. M. Soliman p. 129  abstract 
Down-Conversion IR FEL: Nonlinear Theory 
I. V. Smetanin p. 136  abstract 
Studies of Nonlinear QED in High Energy Electron–Laser Collisions 
Th. Kotseroglou p. 142  abstract 
Laser-Modified Electron Velocity Distributions and Harmonic Generation in a Homogeneous Plasma 
G. Ferrante, P. I. Porshnev, S. A. Uryupin, and M. Zarcone p. 150  abstract 
Theory of Line Broadening in a Quantum Cyclotron Resonance due to Neutral Impurities 
S. P. Andreev, A. S. Andreev, and Yu. A. Gurvich p. 159  abstract 
Polarization Effects in Two-Photon Free–Free Transitions in Laser-Assisted Electron–Hydrogen Collisions 
A. Cionga and G.Buica p. 164  abstract 
 
先端研究拠点事業「超高速強光子場科学」/
特定領域研究「強レーザー光子場における分子制御」
One-day COAST Symposium のお知らせ
先端研究拠点事業「超高速強光子場科学」、特定領域研究「強レーザー光子場における分子制御」では、第2回One-day COAST Symposiumを7月9日（土）に下記のように開催いたします。 

公開のシンポジウムですので、ご関心のお持ちの方は、お気軽にご参加いただき、ディスカッションに加わっていただければ有難く存じます。 
　　　　　　　　　　　　　　　　　　　　　　　　　　　 
山内　薫


記

One-day COAST Symposium 2　
"International Symposium on Ultrafast Phenomena of Atoms,Molecules and Bio-molecules in Designed Laser Fields" 

日　時：
平成17年7月9日（土）午前9時30分 ～ 午後5 時15分
　　　　　　　　　　　〔懇親会：午後6時～8時〕
場　所：
東京大学理学部化学本館５階講堂
Co-chairs：  
河野　裕彦　Hirohiko Kono (Tohoku University, Japan) 
山内　薫　　Kaoru Yamanouchi (University of Tokyo, Japan)
Sponsors：
日本学術振興会　先端研究拠点事業「超高速強光子場科学」　
（JSPS Core-to-Core Program: "Ultrafast Intense Laser Science"）
文部科学省　特定領域研究「強レーザー光子場における分子制御」
（MEXT Priority Area Program: "Control of Molecules in Intense Laser Fields"）
Program：
9:30-9:35
Opening address
Session 1 
Chair: Alejandro Saenz (Humboldt University, Germany)
9:35-10:00
Mikhail Fedorov (General Physics Institute, Russia)
"Entanglement in photoionization of atoms and photodissociation of molecules"
10:00-10:25
Gaetano Ferrante (Palermo University, Italy)
"Enhancement and control of radiation recombination by strong laser fields"
10:25-10:50
Coffee Break
Session 2
Chair: Takashi Nakajima (Kyoto University, Japan)
10:50-11:15
Mikhail Frolov (Voronezh State University, Russia)
"Circularly polarized laser field-induced rescattering plateaus in electron-atom scattering"
11:15-11:40
Ruxin Li (Chinese Academy of Sciences, China)
"Strong attosecond pulse generation by atoms in composite laser field" 
11:40-12:05
Chang Hee Nam (KAIST, Korea)
"Photoexcitation and photoionization of molecules by harmonic pulses" 
12:05-13:20
Lunch
Session 3
Chair: Akiyoshi Hishikawa (Institute for Molecular Science, Japan)
13:20-13:45
Marcus Motzkus (Marburg University, Germany)
"Shaping and control of molecular systems in the ultraviolet"
13:45-14:10
Karl Zrost (Max-Plank-Institut fur Kernphysik, Germany)
"Imaging and manipulation of atomic and molecular fragmentation in intense laser fields"
14:10-14:35
Ryuji Itakura (University of Tokyo, Japan)
"Selective bond breaking of ethanol in intense laser fields"
14:35-15:00
Coffee Break
Session 4 
Chair: Kiminori Kondo (Osaka University, Japan)
15:00-15:25
S. L. Chin (Laval University, Canada)
"Influence of propagation of femtosecond laser pulse on the ionization and fragmentation of molecules"
15:25-15:50
Yasuaki Kishimoto (Kyoto University, Japan)
"Turbulence driven ionization and associated heat transport in high power laser-matter interaction"
15:50-16:15
Coffee Break
Session 5 
Chair: Nobuaki Nakashima (Osaka City University, Japan)
16:15-16:40
Kazutaka G. Nakamura (Tokyo Institute of Technology, Japan)
"Femotosecond time-resolved X-ray diffraction from photo-excited semiconductor"
16:40-17:05
Deepak Mathur (Tata Institute of Fundamental Research, India)　
"Interaction of tightly-focused, infrared, laser light with live cells: exploring the interface of physics and biology"
17:05-17:15
Closing
18:00-20:00
Banquet
Session J28 - Quantum Optics and Strong Field Physics.
ORAL session, Tuesday midday, March 23 
516E, Palais des Congres 
website: http://flux.aps.org/meetings/YR04/MAR04/baps/abs/S3480.html#SJ28.010
[J28.010] Electron spin polarization of ions produced by two-photon pulsed laser ionization of Sr atoms
Yukari Matsuo (RIKEN), Nobuaki Yonekura (U. of Ryukyus), Tohru Kobayashi, Yoshimitsu Fukuyama (RIKEN), Takashi Nakajima (Inst. of Adv. Energy, Kyoto Univ.) 
Spin polarization of ions and electrons plays an important role in the fields of surface physics, atomic and molecular physics, and high-energy physics, in particular, for the study of spin related characteristics. When gas phase atoms are ionized by multi-photon ionization process, the degrees of spin polarization of photoions and photoelectrons are the same if all of the produced photoions are in the s state [1]. We have achieved the degree of electron-spin polarization of Sr^+ ions as large as 64% by ionizing Sr atoms through one-photon resonant two-photon pulsed laser ionization via 5s5p ^3P_1 (M_J=+1) state [2,3]. In other words, we have produced 64% electron-spin polarized photoions and photoelectrons simultaneously. The degree of electron-spin polarization is measured at three different wavelengths (308nm, 266nm, 248nm) for the ionization laser. 
[1] T. Nakajima et. al. J. Chem. Phys., 117, 2112 (2002). [2] T. Nakajima et. al., Appl. Phys. Lett. 83, 2103 (2003) [3] N. Yonekura et. al., J. Chem. Phys. in press.
Website: http://www.iqo.uni-hannover.de/events.html?archiv=true
2007-10-22 13:15:00
Seminarraum D 326 im Institut für Quantenoptik
Prof. Dr. Takashi Nakajima
Institute of Advanced Energy, Kyoto University/Japan
"Few-cycle effects in the low intensity regime" - Institutskolloquium