Author Affiliations
Abstract
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China
We present a simple, robust, space-adjustable dark magneto-optical trap (MOT) for the efficient production of heteronuclear molecules. Double-mixed beams made up of repumping beams and depumping beams propagate in nearly opposite directions in the dark MOT. This optical arrangement can easily adjust the spatial positions of two clouds by changing the power ratio of the two repumping beams, and ensure a good overlap, which is very necessary for the production of heteronuclear molecules. The imaging of cold atoms by camera and the collision-induced loss rate obtained by recording the loading curve of the cold atoms show that we obtain a perfect overlap of atom clouds. The number of RbCs molecules with the double-mixed beams is improved by 70%, which is higher than the one with the single-mixed beam.
020.3320 Laser cooling 020.7010 Laser trapping 300.6360 Spectroscopy, laser 300.6390 Spectroscopy, molecular Chinese Optics Letters
2015, 13(11): 110201
Ruiyu Hao 1,2,3,*Lu Li 2,3,4Rongcao Yang 1,2,3Zhonghao Li 1,2,3Guosheng Zhou 1,2,3
Author Affiliations
Abstract
1 Department of Electronics and Information Technology, Shanxi University
2 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University
3 The State Key Subject of Optics, Shanxi University, Taiyuan 030006
4 Department of Physics, and Institute of Theoretical Physics, Shanxi University
In this letter, exact chirped multi-soliton solutions of the nonlinear Schrodinger (NLS) equation with varying coefficients are found. The explicit chirped one- and two-soliton solutions are generated. As an example, an exponential distributed control system is considered, and some main features of solutions are shown. The results reveal that chirped soliton can all be nonlinearly compressed cleanly and efficiently in an optical fiber with no loss or gain, with the loss, or with the gain. Furthermore, under the same initial condition, compression of optical soliton in the optical fiber with the loss is the most dramatic. Also, under nonintegrable condition and finite initial perturbations, the evolution of chirped soliton has been demonstrated by simulating numerically.
060.5530 pulse propagation and solitons 060.2310 fiber optics 060.2330 fiber optics communications Chinese Optics Letters
2005, 3(3): 03136
Author Affiliations
Abstract
1 Department of Electronics and Information Technology, Shanxi University, Taiyuan 030006
2 Department of Physics, Shanxi University, Taiyuan 030006
The short Hermite-Gaussian optical pulse transmission over 1440 km in a dense dispersion compensated system is investigated based on numerical simulation. In the simulation, compensation is made not only for the group-velocity dispersion but also for the third order dispersion. It is demonstrated that the pulse with reasonably lower power can propagate steadily in net zero, positive and negative dispersion system.
060.2360 fiber optics links and subsystems 060.2330 fiber optics communications Chinese Optics Letters
2003, 1(4): 04205
