Magnetic Field Induced Spectroscopy of ⁸⁸Sr Atoms Probed with a 10 Hz Linewidth Laser

【摘要】 We present our experiment on magnetic field induced spectroscopy of the ¹So—³Po transition of ⁸⁸Sr atoms with a 10 Hz linewidth laser.The ⁸⁸Sr atoms are cooled by two stage laser cooling.After the second stage narrow line laser cooling,the temperature of the atoms is reduced to³μK.The atoms are then loaded into an 813 nm one-dimensional optical lattice.A homemade 698 nm laser with 10 Hz linewidth and maximum intensity of more than 100 W/cm2 is used to probe the ⁽880Sr atoms in the lattice.By means of a magnetic field of ¹ mT and a probe laser with 50ms pulse and ⁶W/cm² intensity,the Doppler free ⁸⁸Sr ¹So-³Po transition spectrum with a linewidth of 208 Hz is obtained.更多还原

【Abstract】 We present our experiment on magnetic field induced spectroscopy of the ¹So—³Po transition of ⁸⁸Sr atoms with a 10 Hz linewidth laser.The ⁸⁸Sr atoms are cooled by two stage laser cooling.After the second stage narrow line laser cooling,the temperature of the atoms is reduced to³μK.The atoms are then loaded into an 813 nm one-dimensional optical lattice.A homemade 698 nm laser with 10 Hz linewidth and maximum intensity of more than 100 W/cm2 is used to probe the ⁽880Sr atoms in the lattice.By means of a magnetic field of ¹ mT and a probe laser with 50ms pulse and ⁶W/cm² intensity,the Doppler free ⁸⁸Sr ¹So-³Po transition spectrum with a linewidth of 208 Hz is obtained.更多还原