The University of Tokyo · 물리·천문학
Sze Yun Set 교수의 연구실은 탄소 나노튜브 기반의 초고속 광학 소자와 그 응용에 중점을 두고 있습니다. 특히 단일벽 탄소 나노튜브를 활용한 포화 흡수체(SAINT)를 개발하여 피코초 레이저의 비보정 모드 락 구현에 성공했으며, 고속, 내구성, 저비용의 광학 소자 설계에 기여하고 있습니다. 연구는 주로 파장 락킹 레이저, 고속 스펙트럼 측정, 그리고 2μm 대역의 고성능 펄스 레이저 시스템 개발에 초점이 맞춰져 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
This paper describes a new class of saturable absorber device based on single-wall carbon nanotube (SWNT)-the saturable absorber incorporating nano tube (SAINT). The device possesses ultrafast optical properties comparable to that of the industrial standard semiconductor saturable absorber mirror (SESAM). Passively mode-locked picosecond fiber lasers in different configurations are demonstrated using SAINTs as mode lockers. This is the first demonstration of optical pulsed lasers based on the ca
We present the first passively mode-locked fiber lasers based on a novel saturable absorber incorporating carbon nanotubes (SAINT). This device offers several key advantages such as: ultrafast recovery time (<1 ps), high-optical damage threshold, mechanical and environmental robustness, chemical stability, and the ability to operate in transmission, reflection, and bidirectional modes. Moreover, the fabrication cost and complexity of SAINT devices are potentially lower than that of conventional
A novel passively mode-locked fiber laser is demonstrated using saturable absorber based on single-walled carbon nanotubes. This is the first demonstration of an optical pulsed laser based on carbon nanotube technology.
We demonstrate for the first time, to the best of our knowledge, a thulium-doped, all-fiber, mode-locked laser using a carbon nanotube saturable absorber, operating in the dissipative-soliton regime and the stretched-pulse-soliton regime. The net dispersion of the laser cavity is adjusted by inserting different lengths of normal dispersion fiber, resulting in different mode-locking regimes. These results could serve as a foundation for the optimization of mode-locked fiber-laser cavity design at
We present an ultra-fast saturable absorber device based on single-walled carbon nanotubes. The saturable absorbing effect was observed using 1 ps optical pulses at 80 GHz. This device possesses promising characteristics for applications such as a noise suppressor or a mode-locker.
In this paper, we present a high-speed wavelength-swept laser for application in a real-time optical device characterization system. The system is capable of simultaneous measurement of both the spectral amplitude and group-delay responses of the device-under-test, at a scan rate of 22 Hz over a wide wavelength range of 50 nm. This corresponds to a record sweep rate of >1000 nm/s.
This paper presents the first demonstration of a pulsed laser based on a saturable absorber incorporating carbon nanotubes (SAINT), capable of mode-lock/Q-switch dual-regime operation. The carbon nanotube-based device shows unparallel performance with a potential to greatly impact pulse laser design and development.
