Experimental investigation of slow light phenomenon in photonic crystal waveguide line defect laser

The guide mode whose frequency locates in the band edge in photonic crystal single line defect waveguide has very low group velocity. So the confinement and gain of electromagnetic field in the band edge are strongly enhanced. Photonic crystal waveguide laser is fabricated and the slow light phenomenon is investigated. The laser is pumped by pulsed pumping light at 980nm whose duty ratio is 0.05%. The active layer in photonic crystal slab is InGaAsP multiple quantum well. Light is transimited by a photonic crystal chirp waveguide in one facet of the laser. Then the output light is coupled to a fiber and the character of laser is analysis by an optical spectrometer. It is found that single mode and multimode happens with different power of pumping light. Meanwhile the plane wave expansion and finite-difference time-domain methods are used to simulate the phenomenon of slow light. And the result of the experiment is compared with the theory which proves the slow light results in lasing oscillation.

The guide mode whose frequency locates in the band edge in photonic crystal single line defect waveguide has very low group velocity. So the confinement and gain of electromagnetic field in the band edge are strongly enhanced. Photonic crystal waveguide laser is fabricated and the slow light phenomenon is investigated. The laser is pumped by pulsed pumping light at 980nm whose duty ratio is 0.05%. The active layer in photonic crystal slab is InGaAsP multiple quantum well. Light is transimited by a photonic crystal chirp waveguide in one facet of the laser. Then the output light is coupled to a fiber and the character of laser is analysis by an optical spectrometer. It is found that single mode and multimode happens with different power of pumping light. Meanwhile the plane wave expansion and finite-difference time-domain methods are used to simulate the phenomenon of slow light. And the result of the experiment is compared with the theory which proves the slow light results in lasing oscillation.

zhangdi于2010-03-09批量导入

zhangdi于2010-03-09批量导入

IEEE AP-MTT-EMC Nanjing Joint Chapter.; Natl Nat Sci Fdn China.; Minist Educ.; SE Univ.; State Key Lab Millimeter Waves.

[Xing, Mingxin; Ren, Gang; Chen, Wei; Zhou, Wenjun; Wang, Hailing; Chen, Linghui; Zheng, Wanhua] Chinese Acad Sci, Inst Semicond, Nanooptoelect Lab, Beijing 100083, Peoples R China

IEEE AP-MTT-EMC Nanjing Joint Chapter.; Natl Nat Sci Fdn China.; Minist Educ.; SE Univ.; State Key Lab Millimeter Waves.