Investigation on achieving the diode-pumped weak line laser at 1.3 μm

• Published in: Optics communications 2010-12, Vol.283 (24), p.5153-5155
• Main Authors: Wei, Yong, Zhang, Ge, Huang, Cheng-Hui, Zhu, Hai-Yong, Huang, Ling-Xiong, Wang, Guo-Fu
• Format: Article
• Language: English
• Subjects: Diode-pumped lasers; Doped-insulator lasers and other solid state lasers; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Lasers; Optics; Physics
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/j.optcom.2010.07.067

In this paper, a continuous-wave (CW) diode-side-pumped Nd:YAlO 3 (Nd:YAP) laser operating at the weak line of 1339 nm has been achieved and investigated. The output of the 1339 nm laser was realized based on the polarization selection and reasonable transmittance design. The relationship between the output powers and resonator lengths of the 1339 nm Nd:YAP laser has been studied and the optimum resonator length was adopted to improve the output power. As high as 31.3 W output power of the a-axis polarized 1339 nm laser has been obtained at the pumping power of 555 W with the optical–optical and slope efficiencies to be 5.6% and 13%, respectively. This work will provide an effective way to obtain the weak line lasers for potential applications in spectroscopy, coherent terahertz generation, etc.