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A diode-pumped continuous-wave Nd:GdTaO4 laser under direct pumping

Y. F. MA1,* , H. T. DANG1, Y. K. QIAO1

Affiliation

  1. Shaanxi Engineering Research Center of Controllable Neutron Source, School of Science, Xijing University, Xi’an, 710123, China

Abstract

In this paper, a continuous wave (CW) 1066 nm Nd:GdTaO4 laser pumped by 879 nm laser diode (LD) was presented. Instead of indirect pumping of 808 nm LD, the using of direct pumping of 879 nm LD reduced the thermal effect of Nd:GdTaO4 crystal obviously. The laser characteristics of output power and slope efficiency were optimized when the parameters of cavity length, transmission of output coupler and waist radius of pumping beam were considered. To the best of our knowledge, the recorded highest output power 6.46 W of and slope efficiency of 53.7% were obtained.

Keywords

Nd:GdTaO4, Continuous wave, Output power, Slope efficiency, Direct pumping.

Citation

Y. F. MA, H. T. DANG, Y. K. QIAO, A diode-pumped continuous-wave Nd:GdTaO4 laser under direct pumping, Optoelectronics and Advanced Materials - Rapid Communications, 16, 3-4, March-April 2022, pp.93-95 (2022).

Submitted at: Oct. 19, 2021

Accepted at: April 7, 2022