상세정보
학술지
Population Inversion and Low Cooperative Upconversion in Er-doped Silicon-rich Silicon Nitride Waveguide
- 저자
- 장지수, 김인용, 성건용, 신중훈
- 발행일
- 201104
- 출처
- Optics Express, v.19 no.9, pp.8406-8412
- ISSN
- 1094-4087
- 출판사
- Optical Society of America(OSA)
- 협약과제
- 10ZC1100, 메가컨버전스 핵심기술 개발, 함호상
- 초록
- Single-mode, strip-loaded silicon-rich silicon nitride (SRSN) waveguide with 11 at.% excess Si and 1.7×1020 cm-3 Er was fabricated and characterized. By using a 350 nm thick SRSN:Er core layer and a 850 nm wide SiO2 strip, a high core-mode overlap of 0.85 and low transmission loss of 2.9 dB/cm is achieved. Population inversion of 0.73-0.75, close to the theoretical maximum, is estimated to have been achieved via 1480 nm resonant pumping, indicating that nearly all doped Er in SRSN are optically active. Analysis of the pump power dependence of Er3+ luminescence intensity and lifetime indicate that the Er cooperative upconversion coefficient in SRSN:Er is as low as 2.1×10-18 cm3/sec. © 2011 Optical Society of America.
- KSP 제안 키워드
- 850 nm, As 2, Cooperative upconversion, Er-doped, Excess Si, Low transmission loss, Luminescence intensity, Optically active, Pump power, Resonant pumping, Silicon nitride waveguide