Kim Namje, Shin Jaeheon, Sim Eundeok, Lee Chul Wook, Yee Dae-Su, Jeon Min Yong, Jang Yudong, Park Kyung Hyun
Photonic/Wireless Convergence Components Department, ETRI, Daejeon 305-700, Korea.
Opt Express. 2009 Aug 3;17(16):13851-9. doi: 10.1364/oe.17.013851.
We report on a monolithic dual-mode semiconductor laser operating in the 1550-nm range as a compact optical beat source for tunable continuous-wave (CW) terahertz (THz) generation. It consists of two distributed feedback (DFB) laser sections and one phase section between them. Each wavelength of the two modes can be independently tuned by adjusting currents in micro-heaters which are fabricated on the top of the each DFB section. The continuous tuning of the CW THz emission from Fe(+)-implanted InGaAs photomixers is successfully demonstrated using our dual-mode laser as the excitation source. The CW THz frequency is continuously tuned from 0.17 to 0.49 THz.
我们报道了一种工作在1550纳米波段的单片双模半导体激光器，它作为一种紧凑的光学拍频源，用于产生可调谐连续波（CW）太赫兹（THz）波。它由两个分布反馈（DFB）激光段以及它们之间的一个相位段组成。通过调节位于每个DFB段顶部的微加热器中的电流，可以独立调谐两种模式的每个波长。使用我们的双模激光器作为激发源，成功演示了从Fe(+)-注入的InGaAs光混频器中连续调谐连续波太赫兹发射。连续波太赫兹频率从0.17太赫兹连续调谐到0.49太赫兹。
