Monolithic dual-mode distributed feedback semiconductor laser for tunable continuous-wave terahertz generation.
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.
Kim
Namje
N
Photonic/Wireless Convergence Components Department, ETRI, Daejeon 305-700, Korea.
Shin
Jaeheon
J
Sim
Eundeok
E
Lee
Chul Wook
CW
Yee
Dae-Su
DS
Jeon
Min Yong
MY
Jang
Yudong
Y
Park
Kyung Hyun
KH
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005246:Feedback; D054023:Lasers, Semiconductor; D008027:Light; D008029:Lighting / Q000295:instrumentation*; D008962:Models, Theoretical; D012542:Scattering, Radiation; D055053:Terahertz Radiation; D055068:Terahertz Spectroscopy / Q000295:instrumentation*