Kim Jae Hun, Chen Meng-Ku, Yang Chia-En, Lee Jon, Shi Kebin, Liu Zhiwen, Yin Stuart Shizhuo, Reichard Karl, Ruffin Paul, Edwards Eugene, Brantley Christina, Luo Claire
Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
Opt Express. 2008 Sep 15;16(19):14792-800. doi: 10.1364/oe.16.014792.
In this paper, we demonstrate that the the bandwidth of the supercontinuum spectrum generated in a large mode area sapphire fiber can be enhanced by employing triple pumping sources. Three pumping sources with wavelengths of 784 nm, 1290 nm, and 2000 nm are launched into a single crystal sapphire fiber that is 5 cm in length and has a core diameter of 115 microm. The nonlinear interactions due to self-phase modulation and four-wave mixing form a broadband supercontinuum that covers the UV, visible, near-IR and lower mid-IR regions. Furthermore, we explore the possibility of generating a broadband supercontinuum expanding from the UV to far-IR region by increasing the number of pumping sources with wavelengths in the mid- and far-IR.
在本文中，我们证明了通过采用三泵浦源，可以增强大模场面积蓝宝石光纤中产生的超连续谱的带宽。将波长分别为784 nm、1290 nm和2000 nm的三个泵浦源注入到一根长度为5 cm、纤芯直径为115微米的单晶蓝宝石光纤中。由自相位调制和四波混频引起的非线性相互作用形成了覆盖紫外、可见、近红外和中红外低频区域的宽带超连续谱。此外，我们还探索了通过增加中红外和远红外波长的泵浦源数量来产生从紫外扩展到远红外区域的宽带超连续谱的可能性。
