Experimental evaluation of temperature distribution of a vapor cell using a Hilbert transform procedure. (26th October 2016)

• Record Type: Journal Article
• Authors: Cai, He; Wang, You; Gao, Ming; Zhang, Wei; Jiang, Zhigang; Han, Juhong; An, Guofei; Wang, Shunyan; Xue, Liangping; Wang, Hongyuan; Zhou, Jie
• Is Part Of: High power laser science and engineering. Volume 4(2016)
• Publication Date: 2016-10-26
• Subjects: DPAL, -- Hilbert transform, -- temperature distribution, -- vapor cell; High power lasers -- Periodicals; 621.366
• DOI: 10.1017/hpl.2016.36
• Languages: English
• ISSNs: 2095-4719

Abstract

Abstract : A diode-pumped alkali vapor laser (DPAL) is one of the most promising candidates of the next-generation high-powered laser source. As the saturated number density of alkali vapor is highly dependent on the temperature inside a vapor cell, the temperature distribution in the cross-section of a cell will greatly affect the homogeneity of a laser medium and the output characteristics of a DPAL. In this paper, we developed an algorithm based on the regime concluding quasi-Hilbert transform to evaluate the phase aberration of a wavefront when the probe beam passes through the vapor cell placed in one arm of a Mach–Zehnder interference setup. According to the theoretical algorithm, we deduced the temperature distribution of a cesium vapor cell for different heating conditions. The study is thought to be useful for development of a high-powered laser.