Distributed feedback laser diode integrated with distributed Bragg reflector for continuous-wave terahertz generation | Zendy

Namje Kim | Zendy; Sang-Pil Han | Zendy; HanCheol Ryu | Zendy; Hyunsung Ko | Zendy; JeongWoo Park | Zendy; Donghun Lee | Zendy; Min Yong Jeon | Zendy; Kyung Hyun Park | Zendy

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Distributed feedback laser diode integrated with distributed Bragg reflector for continuous-wave terahertz generation

Author(s) -

Namje Kim,

Sang-Pil Han,

HanCheol Ryu,

Hyunsung Ko,

JeongWoo Park,

Donghun Lee,

Min Yong Jeon,

Kyung Hyun Park

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.017496

Subject(s) - distributed bragg reflector , optics , materials science , distributed feedback laser , laser , terahertz radiation , optoelectronics , distributed bragg reflector laser , continuous wave , fiber bragg grating , diode , tunable laser , semiconductor laser theory , laser diode , wavelength , physics

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.

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