A passively switchable erbium-doped fiber laser based on alcohol as the saturable absorber(SA)has been demonstrated.The SA is prepared by filling the gap between two optical patch cords with alcohol to form a sandwich...A passively switchable erbium-doped fiber laser based on alcohol as the saturable absorber(SA)has been demonstrated.The SA is prepared by filling the gap between two optical patch cords with alcohol to form a sandwich structure.The modulation depth of the alcohol-SA is measured to be 6.4%.By appropriately adjusting the pump power and the polarization state in the cavity,three kinds of mode-locked pulse patterns can be achieved and switched,including bright pulse,bright/dark soliton pair,and dark pulse.These different soliton emissions all operate at the fundamental frequency state,with a repetition rate of 20.05 MHz and a central wavelength of~1563 nm.To the best of our knowledge,this is the first demonstration of a switchable soliton fiber laser using alcohol as the SA.The experimental results further indicate that organic liquid-like alcohol has great potential for constructing ultrafast lasers.展开更多
Laser state active controlling is challenging under the influence of inherent loss and other nonlinear effects in ultrafast systems.Seeking an extension of degree of freedom in optical devices based on low-dimensional...Laser state active controlling is challenging under the influence of inherent loss and other nonlinear effects in ultrafast systems.Seeking an extension of degree of freedom in optical devices based on low-dimensional materials may be a way forward.Herein,the anisotropic quasi-one-dimensional layered material Ta2PdS6 was utilized as a saturable absorber to modulate the nonlinear parameters effectively in an ultrafast system by polarization-dependent absorption.The polarization-sensitive nonlinear optical response facilitates the Ta2PdS6-based mode-lock laser to sustain two types of laser states,i.e.,conventional soliton and noise-like pulse.The laser state was switchable in the single fiber laser with a mechanism revealed by numerical simulation.Digital coding was further demonstrated in this platform by employing the laser as a codable light source.This work proposed an approach for ultrafast laser state active controlling with low-dimensional material,which offers a new avenue for constructing tunable on-fiber devices.展开更多
基金supported by the National Natural Science Foundation of China(NSFC)(Nos.11874040 and 62105296)the Henan Provincial Science and Technology Research Project(No.222102210042)the Doctor Research Project of Zhengzhou University of Light Industry(No.2020BSJJ065)。
文摘A passively switchable erbium-doped fiber laser based on alcohol as the saturable absorber(SA)has been demonstrated.The SA is prepared by filling the gap between two optical patch cords with alcohol to form a sandwich structure.The modulation depth of the alcohol-SA is measured to be 6.4%.By appropriately adjusting the pump power and the polarization state in the cavity,three kinds of mode-locked pulse patterns can be achieved and switched,including bright pulse,bright/dark soliton pair,and dark pulse.These different soliton emissions all operate at the fundamental frequency state,with a repetition rate of 20.05 MHz and a central wavelength of~1563 nm.To the best of our knowledge,this is the first demonstration of a switchable soliton fiber laser using alcohol as the SA.The experimental results further indicate that organic liquid-like alcohol has great potential for constructing ultrafast lasers.
基金the Jiangsu Province Key Research and Development Program(Grant No.BE2021007-3,BE2023009-5)the National Natural Science Foundation of China(Grant No.62035015,62061136013)+4 种基金the Postgraduate Scientific Research Innovation Project of Hunan Province(Grant No.QL20230006)the Hubei Province Key Laboratory of Systems Science in Metallurgical Process(Grant No.Y202208)the Open Fund of Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education NJ2023002(Grant No.INMD-2023M06)J.W.acknowledges the support from the CAS Young Talent program under Grant No.E3291305the Vacuum Interconnected Nanotech Workstation(Nano-X)of Suzhou Institute of Nano-tech and Nano-bionics(SINANO),Chinese Academy of Sciences is also acknowledged.
文摘Laser state active controlling is challenging under the influence of inherent loss and other nonlinear effects in ultrafast systems.Seeking an extension of degree of freedom in optical devices based on low-dimensional materials may be a way forward.Herein,the anisotropic quasi-one-dimensional layered material Ta2PdS6 was utilized as a saturable absorber to modulate the nonlinear parameters effectively in an ultrafast system by polarization-dependent absorption.The polarization-sensitive nonlinear optical response facilitates the Ta2PdS6-based mode-lock laser to sustain two types of laser states,i.e.,conventional soliton and noise-like pulse.The laser state was switchable in the single fiber laser with a mechanism revealed by numerical simulation.Digital coding was further demonstrated in this platform by employing the laser as a codable light source.This work proposed an approach for ultrafast laser state active controlling with low-dimensional material,which offers a new avenue for constructing tunable on-fiber devices.
