Chinese Optics Letters, Vol. 17, Issue 11, 111403 (2019)
High peak power 1.0 μm and tri-wavelength 1.3 μm Nd:ScYSiO5 crystal lasers
Qiangguo Wang2, Na Cui2, Yongping Yao2, Lihua Meng2, Lei Li1, Lulu Dong1,2, Huiyun Zhang2, Shande Liu1,2,*, and Dehua Li2,**
- 1College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao 266590, China
- 2College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
With a Nd:ScYSiO5 crystal, a high peak power electro-optically Q-switched 1.0 μm laser and tri-wavelength laser operations at the 1.3 μm band are both investigated. With a rubidium titanyle phosphate (RTP) electro-optical switcher and a polarization beam splitter, a high signal-to-noise ratio 1.0 μm laser is obtained, generating a shortest pulse width of 30 ns, a highest pulse energy of 0.765 mJ, and a maximum peak power of 25.5 kW, respectively. The laser mode at the highest laser energy level is the TEM00 mode with the M2 value in the X and Y directions to be Mx2 = 1.52 and My2 = 1.54. A tri-wavelength Nd:ScYSiO5 crystal laser at 1.3 μm is also investigated. A maximum tri-wavelength output power is 1.03 W under the absorbed pump power of 7 W, corresponding to a slope efficiency of 14.8%. The properties of the output wavelength are fully studied under different absorbed pump power.