All Stories

  1. All-optical field-free molecular orientation with higher order parameters

    Article • Physical Review A, December 2025, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  2. All-optical three-dimensional orientation of asymmetric-top molecules with combined linearly and elliptically polarized two-color laser fields

    Article • December 2023, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  3. All-optical control of pendular qubit states with nonresonant two-color laser pulses

    Article • Communications Physics, September 2022, Springer Science + Business Media

    Prof. Dr. Hirofumi Sakai

  4. Stronger orientation of state-selected OCS molecules with relative-delay-adjusted nanosecond two-color laser pulses

    Article • The Journal of Chemical Physics, January 2022, American Institute of Physics

    Md. Maruf Hossain, Prof. Dr. Hirofumi Sakai

  5. Time-Dependent Unitary Transformation Method in the Strong-Field-Ionization Regime with the Kramers-Henneberger Picture

    Article • International Journal of Molecular Sciences, August 2021, MDPI AG

    Prof. Dr. Hirofumi Sakai

  6. Time-Dependent Unitary Transformation Method in the Strong-Field-Ionization Regime With the Kramers-Henneberger Picture

    Article • June 2021, MDPI AG

    Prof. Dr. Hirofumi Sakai

  7. Comparative studies of the degrees of orientation of CO molecules pumped by intense femtosecond two-color pulses based on high-order harmonic generation and Coulomb explosion imaging

    Article • Journal of Physics B Atomic Molecular and Optical Physics, October 2020, Institute of Physics Publishing

    Prof. Dr. Hirofumi Sakai

  8. All-optical orientation of linear molecules with combined linearly and elliptically polarized two-color laser fields

    Article • The Journal of Chemical Physics, September 2020, American Institute of Physics

    Prof. Dr. Hirofumi Sakai, Md. Maruf Hossain

  9. Development of a plasma shutter applicable to 100-mJ-class, 10-ns laser pulses and the characterization of its performance

    Article • Optics Express, June 2019, Optical Society of America (OSA)

    Prof. Dr. Hirofumi Sakai

  10. Orientation of linear molecules in two-color laser fields with perpendicularly crossed polarizations

    Article • May 2019, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  11. Recipe for preparing a molecular ensemble with macroscopic threefold symmetry

    Article • April 2019, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  12. Two- and three-photon double ionization of helium by soft x-ray free-electron laser pulses

    Article • Journal of Physics B Atomic Molecular and Optical Physics, March 2019, Institute of Physics Publishing

    Prof. Dr. Hirofumi Sakai

  13. Time-resolved photoelectron angular distributions from nonadiabatically aligned CO2 molecules with SX-FEL at SACLA

    Article • Journal of Physics Communications, November 2018, Institute of Physics Publishing

    Prof. Dr. Hirofumi Sakai

  14. Photoelectron spectroscopy of Rydberg excited states in singly charged molecular ions CS2 + by NIR laser pulses

    Article • Journal of Physics B Atomic Molecular and Optical Physics, October 2018, Institute of Physics Publishing

    Prof. Dr. Hirofumi Sakai

  15. Electron-wave-packet dynamics extracted from the ellipticity dependence of high-order harmonic generation in benzene molecules

    Article • August 2018, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  16. Improving molecular orientation by optimizing relative delay and intensities of two-color laser pulses

    Article • July 2018, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  17. Ar 3pphotoelectron sideband spectra in two-color XUV + NIR laser fields

    Article • Journal of Physics B Atomic Molecular and Optical Physics, March 2018, Institute of Physics Publishing

    Prof. Dr. Hirofumi Sakai

  18. Orientation dependence in multichannel dissociative ionization of OCS molecules

    Article • July 2017, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  19. Structure determination of molecules in an alignment laser field by femtosecond photoelectron diffraction using an X-ray free-electron laser

    Article • Scientific Reports, December 2016, Springer Science + Business Media

    Prof. Dr. Hirofumi Sakai

  20. Laser-field-free three-dimensional molecular orientation

    Article • July 2016, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  21. Photoelectron diffraction from laser-aligned molecules with X-ray free-electron laser pulses

    Article • Scientific Reports, September 2015, Springer Science + Business Media

    Prof. Dr. Hirofumi Sakai

  22. Phase differences of near-threshold high-order harmonics generated in atoms and molecules

    Article • Physical Review A, December 2014, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  23. Laser-field-free orientation of state-selected asymmetric top molecules

    Article • Physical Review A, May 2014, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  24. Ellipticity Dependence of High-Order Harmonics Generated from Aligned CO2 Molecules

    Article • January 2014, Optical Society of America (OSA)

    Prof. Dr. Hirofumi Sakai

  25. Characteristics of high-order harmonics generated from atoms and aligned molecules with carrier-envelope-phase-stabilized 25-fs pulses

    Article • Physical Review A, May 2012, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  26. Suppression of high-order-harmonic intensities observed in aligned CO2molecules with 1300-nm and 800-nm pulses

    Article • Physical Review A, August 2011, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  27. Measuring polarizability anisotropies of rare gas diatomic molecules by laser-induced molecular alignment technique

    Article • The Journal of Chemical Physics, June 2011, American Institute of Physics

    Prof. Dr. Hirofumi Sakai

  28. Effect of nuclear motion observed in high-order harmonic generation from D2/H2molecules with intense multi-cycle 1300 nm and 800 nm pulses

    Article • Journal of Physics B Atomic Molecular and Optical Physics, April 2011, Institute of Physics Publishing

    Prof. Dr. Hirofumi Sakai

  29. Dependence of the Generation Efficiency of High-Order Sum and Difference Frequencies in the Extreme Ultraviolet Region on the Wavelength of an Added Tunable Laser Field

    Article • Journal of the Physical Society of Japan, January 2011, Physical Society of Japan

    Prof. Dr. Hirofumi Sakai

  30. All-Optical Molecular Orientation

    Article • Physical Review Letters, May 2010, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  31. Generation of high-order sum and difference frequencies by adding an intense parallel- and perpendicular-polarized infrared laser field

    Article • Physical Review A, August 2009, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  32. Field-free molecular orientation by an intense nonresonant two-color laser field with a slow turn on and rapid turn off

    Article • Physical Review A, January 2009, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  33. Retrieving photorecombination cross sections of atoms from high-order harmonic spectra

    Article • Physical Review A, December 2008, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  34. Laser-Field-Free Molecular Orientation

    Article • Physical Review Letters, June 2008, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  35. Alignment dependence of the structural deformation ofCO2molecules in an intense femtosecond...

    Article • Physical Review A, April 2008, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  36. Laser-field-free molecular orientation with combined electrostatic and rapidly-turned-off laser fields

    Article • Physical Review A, March 2008, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  37. Optimal Control of Nonadiabatic Alignment of Rotationally ColdN2Molecules with the Feedback...

    Article • Physical Review Letters, January 2008, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  38. Efficient generation of high-order sum and difference frequencies in the xuv region by combining a weak longer-wavelength field

    Article • Physical Review A, April 2007, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  39. Anomalous angular distribution of fragment ions from rare-gas diatomic molecules with intense, femtosecond, near-infrared laser pulses

    Article • Physical Review A, March 2007, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  40. Publisher’s Note: Ellipticity Dependence of High-Order Harmonic Generation from Aligned Molecules [Phys. Rev. Lett.98, 053002 (2007)]

    Article • Physical Review Letters, February 2007, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  41. Ellipticity Dependence of High-Order Harmonic Generation from Aligned Molecules

    Article • Physical Review Letters, February 2007, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  42. Three-dimensional molecular orientation with combined electrostatic and elliptically polarized laser fields

    Article • Physical Review A, December 2005, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  43. Quantum interference during high-order harmonic generation from aligned molecules

    Article • Nature, May 2005, Springer Science + Business Media

    Prof. Dr. Hirofumi Sakai

  44. Nontrivial polarization shaping of femtosecond pulses by reference to the results of dual-channel spectral interferometry

    Article • Applied Optics, November 2004, Optical Society of America (OSA)

    Prof. Dr. Hirofumi Sakai

  45. Optimal Control of Multiphoton Ionization Processes in AlignedI2Molecules with Time-Depende...

    Article • Physical Review Letters, April 2004, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  46. Polarizability anisotropies of rare gas van der Waals dimers studied by laser-induced molecular alignment

    Article • The Journal of Chemical Physics, October 2003, American Institute of Physics

    Prof. Dr. Hirofumi Sakai

  47. Orientation of polar molecules with combined electrostatic and pulsed, nonresonant laser fields

    Article • Zeitschrift für Physik D, September 2003, Springer Science + Business Media

    Prof. Dr. Hirofumi Sakai

  48. Nonsequential double ionization ofD2

    Article • Physical Review A, June 2003, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  49. Observation of molecular orientation by the combination of electrostatic and nonresonant, pulsed laser fields

    Article • The Journal of Chemical Physics, March 2003, American Institute of Physics

    Prof. Dr. Hirofumi Sakai

  50. Controlling the Orientation of Polar Molecules with Combined Electrostatic and Pulsed, Nonresonant Laser Fields

    Article • Physical Review Letters, February 2003, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  51. Alignment of Neutral Molecules by a Strong Nonresonant Linearly Polarized Laser Field

    Article • June 2002, American Chemical Society (ACS)

    Prof. Dr. Hirofumi Sakai

  52. Numerical simulations of molecular orientation using strong, nonresonant, two-color laser fields

    Article • The Journal of Chemical Physics, September 2001, American Institute of Physics

    Prof. Dr. Hirofumi Sakai

  53. Aligning molecules with intense nonresonant laser fields

    Article • The Journal of Chemical Physics, November 1999, American Institute of Physics

    C P Safvan, Prof. Dr. Hirofumi Sakai

  54. Controlling the alignment of neutral molecules by a strong laser field

    Article • The Journal of Chemical Physics, June 1999, American Institute of Physics

    C P Safvan, Prof. Dr. Hirofumi Sakai

  55. Metastable Triply Charged Diatomic Molecules Produced with Femtosecond Pulses

    Article • Physical Review Letters, September 1998, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  56. Time-resolved Coulomb explosion imaging: A method to measure structure and dynamics of molecular nuclear wave packets

    Article • Physical Review A, July 1998, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  57. Optical deflection of molecules

    Article • Physical Review A, April 1998, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  58. Observing molecular dynamics with timed Coulomb explosion imaging

    Article • Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences, February 1998, Royal Society Publishing

    Prof. Dr. Hirofumi Sakai

  59. Deflection of Neutral Molecules using the Nonresonant Dipole Force

    Article • Physical Review Letters, October 1997, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  60. Formation and measurement of molecular quantum picostructures

    Article • Physical Review A, May 1997, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  61. High-order harmonic generation in nitrogen molecules with subpicosecond visible dye-laser pulses

    Article • Applied Physics B Photophysics and Laser Chemistry, November 1995, Springer Science + Business Media

    Prof. Dr. Hirofumi Sakai

  62. Effect of multiphoton ionization on high-order harmonic generation and propagation in rare gases with subpicosecond laser pulses

    Article • Physical Review A, November 1994, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  63. High-order harmonic generation in rare gases with subpicosecond XeCl laser pulses

    Article • Physical Review A, January 1994, American Physical Society (APS)

    Prof. Dr. Hirofumi Sakai

  64. Measurement of subpicosecond ultraviolet pulse widths by using the high-order nonlinear processes in a supersonic gas jet

    Article • Journal of the Optical Society of America B, November 1992, Optical Society of America (OSA)

    Prof. Dr. Hirofumi Sakai

  65. Third-Order Nonlinear Susceptibility of Cadmium for the Generation of Continuously Tunable Vacuum Ultraviolet Radiation

    Article • Japanese Journal of Applied Physics, October 1992, Institute of Physics Publishing

    Prof. Dr. Hirofumi Sakai

  66. High-order harmonic generation in rare gases with intense subpicosecond dye laser pulses

    Article • Journal of Physics B Atomic Molecular and Optical Physics, February 1992, Institute of Physics Publishing

    Prof. Dr. Hirofumi Sakai

  67. Absorption Coefficient and Sensitivity of Positive and Negative Resists in the Vacuum Ultraviolet Region

    Article • Japanese Journal of Applied Physics, February 1992, Institute of Physics Publishing

    Prof. Dr. Hirofumi Sakai

  68. Extreme-ultraviolet laser spectroscopy of core-excited Rb atoms

    Article • Journal of the Optical Society of America B, June 1991, Optical Society of America (OSA)

    Prof. Dr. Hirofumi Sakai

  69. Two-photon resonances in Xe and Kr for the generation of tunable coherent extreme UV radiation

    Article • Applied Optics, February 1989, Optical Society of America (OSA)

    Prof. Dr. Hirofumi Sakai

  70. Coherent VUV generation by resonantly-enhanced nonlinear frequency mixing in Cd vapor

    Article • IEEE Journal of Quantum Electronics, December 1986, Institute of Electrical & Electronics Engineers (IEEE)

    Prof. Dr. Hirofumi Sakai

  71. Efficient deep-ultraviolet generation by frequency doubling in β-BaB_2O_4 crystals

    Article • Optics Letters, December 1986, Optical Society of America (OSA)

    Prof. Dr. Hirofumi Sakai

  72. Generation of continuously tunable coherent vacuum-ultraviolet radiation in Cd vapor

    Article • Optics Letters, October 1984, Optical Society of America (OSA)

    Prof. Dr. Hirofumi Sakai