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학술지 Distributed Feedback Laser Diode Integrated with Distributed Bragg Reflector for Continuous-wave Terahertz Generation
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저자
김남제, 한상필, 류한철, 고현성, 박정우, 이동훈, 전민용, 박경현
발행일
201207
출처
Optics Express, v.20 no.16, pp.17496-17502
ISSN
1094-4087
출판사
Optical Society of America (OSA),
DOI
https://dx.doi.org/10.1364/OE.20.017496
초록
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). Microheaters 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. © 2012 Optical Society of America.
KSP 제안 키워드
Beat frequency, Cavity structure, Continuous-wave terahertz, Distributed Bragg reflector, Distributed feedback (DFB) laser, Distributed feedback laser diode, Distributed feedback lasers(DFBs), Gain medium, Laser diode(LD), Low temperature(LT), Novel device