title: Distributed feedback laser diode integrated with distributed Bragg reflector for continuous-wave terahertz generation.
abstract: A widely tunable dual mode laser diode with a single cavity structure is demonstrated. This novel device consists of a distributed feedback (DFB) laser diode and distributed Bragg reflector (DBR). Micro-heaters are integrated on the top of each section for continuous and independent wavelength tuning of each mode. By using a single gain medium in the DFB section, an effective common optical cavity and common modes are realized. The laser diode shows a wide tunability of the optical beat frequency, from 0.48 THz to over 2.36 THz. Continuous wave THz radiation is also successfully generated with low-temperature grown InGaAs photomixers from 0.48 GHz to 1.5 THz.
authors.affiliation: THz Photonics Creative Research Center, ETRI, Daejeon 305-700, South Korea.
authors.forename: Namje
authors.initials: N
authors.lastname: Kim
authors.forename: Sang-Pil
authors.initials: SP
authors.lastname: Han
authors.forename: Han-Cheol
authors.initials: HC
authors.lastname: Ryu
authors.forename: Hyunsung
authors.initials: H
authors.lastname: Ko
authors.forename: Jeong-Woo
authors.initials: JW
authors.lastname: Park
authors.forename: Donghun
authors.initials: D
authors.lastname: Lee
authors.forename: Min Yong
authors.initials: MY
authors.lastname: Jeon
authors.forename: Kyung Hyun
authors.initials: KH
authors.lastname: Park