Papers - Hasegawa, Taro

Stabilization of the coupled resonant cavity without dither

HASEGAWA TARO

Optics Communications 308   270-273 2013.11

Research paper (scientific journal), Single Work, Accepted

Fourth harmonic generation of continuous-wave lasers in coupled-cavity configuration

HASEGAWA TARO

Optics Communications 285 ( 24 ) 5368-5371 2012.11

Research paper (scientific journal), Single Work, Accepted

Modulation-free laser frequency stabilization to a saturated sub-Doppler spectral line in a transversal magnetic field

OKUBO SHO, IWAKUNI KANA, HASEGAWA TARO

Optics Communications 285 ( 20 ) 4107-4111 2012.09

Research paper (scientific journal), Joint Work, Accepted

Efficient photo-ionization for barium ion trapping using a dipole-allowed resonant two-photon transition

G. Leschhorn, T. Hasegawa, T. Schaetz

Applied Physics B 108 ( 1 ) 159-165 2012.07

Research paper (scientific journal), Joint Work, Accepted

Sympathetic cooling of a mass-mismatched two-ion chain in a double-well trap potential

HASEGAWA TARO

Physical Review A 83 ( 5 ) 053407 2011

Research paper (scientific journal), Single Work, Accepted

Quantum mechanics in rotating-radio-frequency traps and Penning traps with a quadrupole rotating field

ABE KAZUYA, HASEGAWA TARO

Physical Review A 81   033402 2010

Research paper (scientific journal), Joint Work, Accepted

　View Summary

Quantum mechanics of the rotating rf traps is analyzed.

Laser frequency locking by dispersive response of atoms in transversal magnetic field

HASEGAWA TARO, DEGUCHI MITSUYASU

Journal of Optical Society of America B (The Optical Society)  26 ( 6 ) 1216–1220 2009.06

Research paper (scientific journal), Joint Work, Accepted

Rotating-radio-frequency ion traps

HASEGAWA TARO, BOLLINGER JOHN

Physical Review A 72   043403 2005

Research paper (scientific journal), Joint Work, Accepted

　View Summary

Rotating-rf ion traps were introduced and the dynamics of a trapped ion in the rrf trap was discussed.

Rapid Heating of a Strongly Coupled Plasma near the Solid-Liquid Phase Transition

JENSEN MARIE, HASEGAWA TARO, BOLLINGER JOHN, DUBIN DANIEL

Physical Review Letters 95   025001 2005

Research paper (scientific journal), Joint Work, Accepted

　View Summary

Rapid heating of ion crystals in a Penning trap were observed and discussed.

Stability of a Penning trap with a quadrupole rotating electric field

TARO HASEGAWA, JENSEN MARIE, BOLLINGER JOHN

Physical Review A 71   023406 2005

Research paper (scientific journal), Joint Work, Accepted

　View Summary

Stability of a Penning trap with a rotating quadrupole electric field was examined.

Temperature and heating rate of ion crystals in Penning traps

JENSEN MARIE, HASEGAWA TARO, BOLLINGER JOHN

Physical Review A 70   033401 2004

Research paper (scientific journal), Joint Work, Accepted

　View Summary

Temperature and heating rate of ion crystals in a Penning trap were observed.

Limiting temperature of sympathetically cooled ions in a radio-frequency trap

HASEGAWA TARO, SHIMIZU TADAO

Physical Review A 67   013408 2003

Research paper (scientific journal), Joint Work, Accepted

　View Summary

Temperatures of sympathetically cooled ions in an rf trap were discussed.

Resonant oscillation modes of sympathetically cooled ions in a radio-frequency trap

HASEGAWA TARO, SHIMIZU TADAO

Physical Review A 66   063404 2002

Research paper (scientific journal), Joint Work, Accepted

　View Summary

Resonant frequencies of sympathetically cooled ions in an rf trap were discussed.

Spin dynamics of dense alkali-metal atoms

ISHIKAWA KIYOSHI, KOJIMA TOGO, HASEGAWA TARO, TAKAGI YOSHIHIRO

Physical Review A 65   032511 2002

Research paper (scientific journal), Joint Work, Accepted

　View Summary

Spin dynamics of alkaline metal atoms was discussed.

Observation and Temperature Measurement of Sympathetically Cooled Ions in an RF Trap

HASEGAWA TARO, SHIMIZU TADAO

IEEE Trans. Instrum. Meas. 50   556-558 2001

Research paper (scientific journal), Joint Work, Accepted

　View Summary

Temperature of sympathetically cooled barium ions was observed.

Removal of irrelevant isotope ions in the presence of laser cooling in a rf trap

HASEGAWA TARO, SHIMIZU TADAO

Applied Physics B 70   867-871 2000

Research paper (scientific journal), Joint Work, Accepted

　View Summary

Isotope separation of magnesium ions in an rf trap was demonstrated.

Charge transfer between a laser-cooled ion and a thermal atom in a radio-frequency trap

HASEGAWA TARO, SHIMIZU TADAO

The XXI International Conference on the Physics of Electronic and Atomic Collisions  1999

Research paper (scientific journal), Joint Work

　View Summary

Charge transfer processes between trapped and laser-cooled ions and thermal atoms were observed

Frequency-doubled Hermite-Gaussian beam and the mode conversion to the Laguerre-Gaussian beam

HASEGAWA TARO, SHIMIZU TADAO

Optics Communications 160   103-108 1999

Research paper (scientific journal), Joint Work, Accepted

　View Summary

Transverse modes and their modificatiions by nonlinear optical processes were discussed.

Distortion of spectral line profiles of laser-cooled ions in a radio-frequency ion trap

HASEGAWA TARO, TANOOKA DAISUKE, SHIMIZU TADAO

Physical Review A 58   2327-2331 1998

Research paper (scientific journal), Joint Work, Accepted

　View Summary

Spectral line shapes of laser-cooled ions in an rf trap were discussed.

Collisions and Fluorescence Line Shape of Laser Cooled Ions in an RF Trap

Tadao Shimizu, Taro Hasegawa, Daisuke Tanooka, Yoshitaka Oshima, Yoshiki Moriwaki, Yoshiharu Maeno, and Maki Tachikawa

Proc. of the 13th International Conference on Laser Spectroscopy (THICOLS’97) Hangzhou, China    194 - 199 1997.06

Research paper (international conference proceedings), Joint Work