Chinese Optics Letters, 2019, 17 (11): 111403, Published Online: Sep. 4, 2019
High peak power 1.0 μm and tri-wavelength 1.3 μm Nd:ScYSiO5 crystal lasers
Abstract
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.
Qiangguo Wang, Na Cui, Yongping Yao, Lihua Meng, Lei Li, Lulu Dong, Huiyun Zhang, Shande Liu, Dehua Li. High peak power 1.0 μm and tri-wavelength 1.3 μm Nd:ScYSiO5 crystal lasers[J]. Chinese Optics Letters, 2019, 17(11): 111403.