상세정보
학술지
Graphene-dispersed Polymer Waveguide for Efficient Formation of Mode-locked Lasers at Extremely Low Graphene Concentration
- 저자
- 류보원, 김진태, 송용원
- 발행일
- 202009
- 출처
- Carbon, v.166, pp.123-130
- ISSN
- 0008-6223
- 출판사
- Elsevier
- 협약과제
- 20HB1900, 근거리 저속 이동형 양자암호통신을 위한 편광기반 무선 양자키분배 송수신부 집적화 모듈 기술 개발, 윤천주
- 초록
- Graphene-functioned mode-locked lasers have been the key elements in ultrafast optical data management. However, most conventional graphene mode-rely on deleterious transferred graphene that inefficiently interacts with the evanescent field of the propagating light. We demonstrate a polymer waveguide that contains reduced graphene oxide (rGO) particles to induce ?쐂irect?? interaction with a significantly improved efficiency at an rGO concentration of 8 × 10?닋4 wt%. By confirming the nonlinear saturable absorption and dispersion stability of the rGO crystals hosted in a commercially available polymer matrix by only a solution process, we obtained a femtosecond fiber laser passively functioned by the waveguide. The resultant laser displays a center wavelength, spectral width, repetition rate, extinction ratio, and temporal pulse duration of 1561.8 nm, 9.5 nm, 2.35 MHz, 83.19 dB, and 690 fs, respectively.
- KSP 제안 키워드
- 5 nm, Center wavelength, Data Management, Graphene oxide(GOS), Improved efficiency, Mode-locked laser, Nonlinear saturable absorption, Pulse duration, Repetition rate, Ultrafast optical, dispersion stability