{"title":"大口径光焦度可电调菲涅耳液晶透镜","authors":"黄振豪 Huang Zhenhao, 刘志强 Liu Zhiqiang, 林弘峻 Lin Hongjun, 叶茂 Ye Mao","doi":"10.3788/lop221247","DOIUrl":"https://doi.org/10.3788/lop221247","url":null,"abstract":"液晶透镜是一种无需机械移动，可电控调焦的光学透镜。报道了一种大口径液晶透镜，将液晶透镜分成多个菲涅耳旁瓣，在保证光焦度和响应速度的情况下，可以极大地提高了液晶透镜的口径。利用叉指电极方式连接并控制各个旁瓣，每个旁瓣的驱动电压相同，简化了驱动方式。本工作设计的菲涅耳液晶透镜直径达到了1 cm，光焦度由所加电压进行控制，变化范围为－1.62D~＋1.57D，入射平面波经过该菲涅耳液晶透镜调制，波前接近抛物线分布，呈现出良好的光学特性，本工作将此透镜作为对焦元件在成像系统中进行演示。","PeriodicalId":51502,"journal":{"name":"激光与光电子学进展","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135659411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
None Li Yuqing, None Du Huiying, None Wang Yunfei, None Wu Jizhou, None Liu Wenliang, None Li Peng, None Fu Yongming, None Ma Jie, None Xiao Liantuan, None Jia Suotang
We report the effective slowing and trapping of Cs atoms in an ultrahigh-vacuum apparatus. The heated Cs atoms in an oven are slowed using a Zeeman slower after the oven chamber and then trapped using a magneto-optical trap in a science chamber. Compared to the traditional vacuum pressure of ~10-7 Pa determined by the vapor pressure of Cs atoms in the oven chamber, the designed cold nipple and differential pumping tube are used between the oven and the oven chamber to achieve a lower vacuum pressure of ~3.6×10-9 Pa. This is beneficial for achieving and maintaining an ultrahigh vacuum in the science chamber. We demonstrate the performance of our apparatus through the effective slowing of Cs atoms and an optimal magneto-optical trap.
{"title":"Effective Slowing and Trapping of Cs Atoms in an Ultrahigh-Vacuum Apparatus","authors":"None Li Yuqing, None Du Huiying, None Wang Yunfei, None Wu Jizhou, None Liu Wenliang, None Li Peng, None Fu Yongming, None Ma Jie, None Xiao Liantuan, None Jia Suotang","doi":"10.3788/lop231417","DOIUrl":"https://doi.org/10.3788/lop231417","url":null,"abstract":"We report the effective slowing and trapping of Cs atoms in an ultrahigh-vacuum apparatus. The heated Cs atoms in an oven are slowed using a Zeeman slower after the oven chamber and then trapped using a magneto-optical trap in a science chamber. Compared to the traditional vacuum pressure of ~10-7 Pa determined by the vapor pressure of Cs atoms in the oven chamber, the designed cold nipple and differential pumping tube are used between the oven and the oven chamber to achieve a lower vacuum pressure of ~3.6×10-9 Pa. This is beneficial for achieving and maintaining an ultrahigh vacuum in the science chamber. We demonstrate the performance of our apparatus through the effective slowing of Cs atoms and an optimal magneto-optical trap.","PeriodicalId":51502,"journal":{"name":"激光与光电子学进展","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135104362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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