中国激光, 2017, 44 (7): 0703021, 网络出版: 2017-07-05
金纳米棒饱和吸收体1 μm被动调Q固体激光器
Passively Q-Switched 1 μm Solid-State Laser Using Gold Nanorod as Saturable Absorber
摘要
受表面等离激元共振效应的影响, 金纳米棒饱和吸收体具有饱和吸收宽带可调、非线性响应时间快等特点, 且便于与各种激光谐振腔整合, 是一种有潜力的宽波段饱和吸收体材料。报道了一种基于金纳米棒饱和吸收体的1 μm波段被动调Q固体激光器。将金纳米棒溶液旋涂于输出镜上, 并将其作为可饱和吸收体构建到激光谐振腔中, 在LD端面抽运Nd∶YVO4激光器中实现了1064 nm被动调Q运转。在抽运功率为7.5 W时获得了平均输出功率为540 mW, 最小脉冲宽度为138 ns, 重复频率为602 kHz的脉冲激光输出。
Abstract
Benefiting from the surface plasmon resonance effect, the gold nanorod saturable absorber possesses the properties of tunable broadband of saturable absorption and fast nonlinear response. It can also easy integrate with a variety of laser resonators, making it a promising saturable absorber with a wide broadband. The passively Q-switched 1 μm solid-state laser using gold nanorods as saturable absorbers is demonstrated. The gold nanorods are directly spin coated on the output coupler, and introduced in the laser resonator as saturable absorbers. Passively Q-switched operation of a LD pump Nd∶YVO4 laser at 1064 nm is realized accordingly. The pulsed laser output with a maximum average output power of 540 mW, a minimum pulse width of 138 ns, and a pulse repetition rate of 602 kHz are achieved when the pump power is 7.5 W.
黄海涛, 李敏, 金琳, 王辉, 刘翩, 沈德元. 金纳米棒饱和吸收体1 μm被动调Q固体激光器[J]. 中国激光, 2017, 44(7): 0703021. Huang Haitao, Li Min, Jin Lin, Wang Hui, Liu Pian, Shen Deyuan. Passively Q-Switched 1 μm Solid-State Laser Using Gold Nanorod as Saturable Absorber[J]. Chinese Journal of Lasers, 2017, 44(7): 0703021.