Quasi one-dimensional diffuse laser cooling of atoms
Abstract
We demonstrate experimentally the generation of one-dimensional cold gases of Rb atoms by diffuse laser cooling (DLC). A horizontal slender vacuum glass tube with length of 105~cm and diameter of 2~cm is used in our experiment. The diffuse laser light inside the tube, which is generated by multi-reflection of injected lasers, cools the background vapor atoms. With 250~mW of cooling light and 50~mW of repumping light, an evenly distributed meter-long profile of atom cloud is obtained. We observe a factor 4 improvement on the atomic OD for a typical cooling duration of 170~ms and a sub-Doppler atomic temperature of 25~k. The maximum number of detected cold atoms remain constant for a free-fall duration of 30~ms. Such samples are ideal for many quantum optical experiments involving electromagnetically induced transparency, electronically highly excited (Rydberg) atoms and quantum precision measurements.
Keywords
Cite
@article{arxiv.2111.14326,
title = {Quasi one-dimensional diffuse laser cooling of atoms},
author = {Jin-Yin Wan and Xin Wang and Xiao Zhang and Yan-Ling Meng and Wen-Li Wang and Yuan Sun and Liang Liu},
journal= {arXiv preprint arXiv:2111.14326},
year = {2022}
}
Comments
5 pages, 4 figures, 22 references