中国激光, 2010, 37 (3): 708, 网络出版: 2010-03-11
基于光纤的太赫兹产生技术
Terahertz Generation Based on Optical Fibers
非线性光学 太赫兹辐射源 四波混频 单模光纤 双波长激光器 nonlinear optics terahertz radiation source four-wave mixing single-mode optical fibers dual-wavelength laser
摘要
提出了一种新型的基于普通单模光纤的太赫兹辐射源。采用频率差在太赫兹范围的双波长激光器进行抽运,利用光纤的四波混频效应,得到结构紧凑、同时频率可调的连续波太赫兹辐射源。采用耦合波理论,详细分析了普通单模石英光纤中的四波混频过程,得到了太赫兹波输出功率的解析表达式。结果表明,抽运功率为1 kW时,可获得的太赫兹辐射峰值功率达到60 mW。该方案提供了一种新型的高功率、紧凑型、连续输出的太赫兹辐射源。
Abstract
This paper proposes theoretically a novel terahertz source based on the conventional single-mode optical fibers. Utilizing four-wave-mixing effect in optical fibers and the dual-wavelength laser as the pump source,a compact,wide-tunable countinuous wave (CW) terahertz source is constructed. The four-wave mixing process has been discussed in detail through the coupled-wave theory,and the analytical expression of terahertz output power is obtained. It is shown that when the pump power is 1 kW,the terahertz peak power is about 60 mW. This scheme provides a possibility to realize a high-power and compact CW terahertz source.
周平, 范滇元. 基于光纤的太赫兹产生技术[J]. 中国激光, 2010, 37(3): 708. Zhou Ping, Fan Dianyuan. Terahertz Generation Based on Optical Fibers[J]. Chinese Journal of Lasers, 2010, 37(3): 708.