상세정보
학술지
Efficient Optical Saturable Absorbers with Graphene on Polymer Waveguides for Femtosecond Laser Pulse Formation
- 저자
- 류보원, 이성재, 김진태, 송용원
- 발행일
- 201811
- 출처
- Annalen der Physik, v.530 no.11, pp.1-7
- ISSN
- 0003-3804
- 출판사
- John Wiley & Sons
- 협약과제
- 18HS7200, 일차원 나노-레이저 기반의 능동 광 케이블 (AOC) 개발, 김진태
- 초록
- Photonic integrated circuits (PICs) are notable for their enhanced functionalities with material flexibilities to find applications in wearable high-speed data management systems. Due to the miniaturized dimensions of PICs, the employment of a nanomaterial having significant optical nonlinearity is critical. Here, it is demonstrated that a polymer waveguide can be harmonized with nonlinear graphene to form ultrashort laser pulses. The graphene works as nonlinear saturable absorber on the polymer waveguide prepared with a perfluorinated acrylic resin. The evanescent field of a laser propagating through the waveguide interacts with graphene to induce intracavity intensity modulation for femtosecond-scale pulse formation. The laser output is characterized quantitatively as the central wavelength, spectral width, repetition rate, extinction ratio, and pulse duration, which are 1553.32혻nm, 10.21혻nm, 4.18혻MHz, 76.03혻dB, and 874 fs, respectively. Stable operation is verified over 3 h.
- KSP 제안 키워드
- Acrylic resin, Central wavelength, Data Management System, Femtosecond laser pulse, High Speed, Intensity Modulation, Laser output, Optical nonlinearity, Pulse duration, Repetition rate, Saturable Absorber