Neural networks have provided faster and more straightforward solutions for laser modulation.However,their effectiveness when facing diverse structured lights and various output resolutions remains vulnerable because ...Neural networks have provided faster and more straightforward solutions for laser modulation.However,their effectiveness when facing diverse structured lights and various output resolutions remains vulnerable because of the specialized end-to-end training and static model.Here,we propose a redefinable neural network(RediNet),realizing customized modulation on diverse structured light arrays through a single general approach.The network input format features a redefinable dimension designation,which ensures RediNet wide applicability and removes the burden of processing pixel-wise light distributions.The prowess of originally generating arbitrary-resolution holograms with a fixed network is first demonstrated.The versatility is showcased in the generation of 2D/3D foci arrays,Bessel and Airy beam arrays,(perfect)vortex beam arrays,and even snowflake-intensity arrays with arbitrarily built phase functions.A standout application is producing multichannel compound vortex beams,where RediNet empowers a spatial light modulator(SLM)to offer comprehensive multiplexing functionalities for free-space optical communication.Moreover,RediNet has the hitherto highest efficiency,only consuming 12 ms(faster than the mainstream SLM framerate of 60 Hz)for a 1000^(2)-resolution holograph,which is critical in real-time required scenarios.Considering the fine resolution,high speed,and unprecedented universality,RediNet can serve extensive applications,such as next-generation optical communication,parallel laser direct writing,and optical traps.展开更多
Self-assembly of particle-like dissipative solitons,in the presence of mutual interactions,emphasizes the vibrant concept of soliton molecules in varieties of laser resonators.Controllable manipulation of the molecula...Self-assembly of particle-like dissipative solitons,in the presence of mutual interactions,emphasizes the vibrant concept of soliton molecules in varieties of laser resonators.Controllable manipulation of the molecular patterns,held by the degrees of freedom of internal motions,still remains challenging to explore more efficient and subtle tailoring approaches for the increasing demands.Here,we report a new phase-tailored quaternary encoding format based on the controllable internal assembly of dissipative soliton molecules.Artificial manipulation of the energy exchange of soliton-molecular elements stimulates the deterministic harnessing of the assemblies of internal dynamics.Self-assembled soliton molecules are tailored into four phase-defined regimes,thus constituting the phase-tailored quaternary encoding format.Such phase-tailored streams are endowed with great robustness and are resistant to significant timing jitter.All these results experimentally demonstrate the programmable phase tailoring and exemplify the application of the phase-tailored quaternary encoding,prospectively promoting high-capacity all-optical storage.展开更多
The evolution of soliton molecules emphasizes the complex soliton dynamics akin to matter molecules.Beyond the simplest soliton molecule-a soliton pair constituted by two bound pulses-soliton molecules with more const...The evolution of soliton molecules emphasizes the complex soliton dynamics akin to matter molecules.Beyond the simplest soliton molecule-a soliton pair constituted by two bound pulses-soliton molecules with more constituents have more degrees of freedom because of the temporal pulse separations and relative phases.Here we detailedly characterize the transient dynamics of soliton triplets in fiber lasers by using the dispersive Fourier transform measurement.A particular form of leading,central,and tailing pulses is constructed to shed new light on more intriguing scenarios and fuel the molecular analogy.Especially the vibrating dynamics of the central and tailing pulses are captured near the regime of equally spaced soliton triplets,which is reminiscent of the recurrent timing jitters within multi-pulse structures.Further insights enable acess into a universal form of unequally spaced soliton triplets interpreted as 2+1 soliton molecules.Different binding strengths of intramo-lecular and intermolecular bonds are validated with respect to the diverse internal motions involved in this soliton triplet molcule.All these findings unveil the transient dynamics with more degrees of freedom as well as highlight the possible application for all-optical bit storage.展开更多
Fiber lasers are a paradigm of dissipative systems,which distinguish themselves from a Hamilton system where energy is conservative.Consequently,pulses generated in a fiber laser are always accompanied by the continuo...Fiber lasers are a paradigm of dissipative systems,which distinguish themselves from a Hamilton system where energy is conservative.Consequently,pulses generated in a fiber laser are always accompanied by the continuous wave(CW).Under certain hypothesis,pulses generated in a fiber laser can be considered as a soliton,a product of a Hamilton system.Therefore,all the descriptions of solitons of a fiber laser are approximate.Coexistence of solitons and the CW from a fiber laser prevents unveiling of real nonlinear dynamics in fiber lasers,such as soliton interactions.Pulse behavior in a fiber laser can be represented by the state of single pulse,the state of period doubling of single pulse,the states of two pulses either tightly bound or loosely distributed,the states of three pulses,and various combinations of the above-mentioned states.Recently,soliton distillation was proposed and numerically demonstrated based on the nonlinear Fourier transform(NFT)[J.Lightwave Technol.39,2542(2021)].Solitons can be separated from the coherent CW background.Therefore,it is feasible to isolate solitons from CW background in a fiber laser.Here,we applied the NFT to various pulses generated in a fiber laser,including single pulse,single pulse in period doubling,different double pulses,and multiple pulses.Furthermore,with the approach of soliton distillation,the corresponding pure solitons of those pulses are reconstructed.Simulation results suggest that the NFT can be used to identify soliton dynamics excluding CW influence in a fiber laser,which paves a new way for uncovering real soliton interaction in nonlinear systems.展开更多
Self-assembly of dissipative solitons arouses versatile configurations of molecular complexes,enriching intriguing dynamics in mode-locked lasers.The ongoing studies fuel the analogy between matter physics and optical...Self-assembly of dissipative solitons arouses versatile configurations of molecular complexes,enriching intriguing dynamics in mode-locked lasers.The ongoing studies fuel the analogy between matter physics and optical solitons,and stimulate frontier developments of ultrafast optics.However,the behaviors of multiple constituents within soliton molecules still remain challenging to be precisely unveiled,regarding both the intramolecular and intermolecular motions.Here,we introduce the concept of“soliton isomer”to elucidate the molecular dynamics of multisoliton complexes.The time-lens and time-stretch techniques assisted temporal-spectral analysis reveals the diversity of assembly patterns,reminiscent of the“isomeric molecule”.Particularly,we study the fine energy exchange during the intramolecular motions,therefore gaining insights into the degrees of freedom of isomeric dynamics beyond temporal molecular patterns.All these findings further answer the question of how far the matter-soliton analogy reaches and pave an efficient route for assisting the artificial manipulation of multisoliton structures.展开更多
On-demand and real-time generation of arbitrary complex fields directly from the laser source holds significant appeal for myriad applications. In this Letter, we demonstrate a ring laser configuration capable of dyna...On-demand and real-time generation of arbitrary complex fields directly from the laser source holds significant appeal for myriad applications. In this Letter, we demonstrate a ring laser configuration capable of dynamically generating arbitrary transverse fields. In a ring laser resonator, two cascaded phase modulations are utilized, which permits the control of two beams with high efficiency and high fidelity. The zeroth-order beam is a fundamental Gaussian field that self-reproduces itself in the resonator. The first-order beam serves as the desired output field, which is separated from the selfreproduction mode to facilitate the on-demand manipulation of amplitude and phase. In the verification experiments,a series of typical Hermite–Gaussian(HG) modes, Laguerre–Gaussian(LG) modes, flat-top mode, and amplitude-only pattern“A” are generated from the ring laser configuration. This innovative ring laser resonator may open up new perspectives for the design of structured-light lasers, with potential impacts in applications such as particle manipulation, advanced microscopy, and next-generation optical communication.展开更多
基金supported by the Innovation Project of Optics Valley Laboratory(Grant No.OVL2023PY006)the National Natural Science Foundation of China(Grant No.62275097)+1 种基金the Key Research and Development Project of Hubei Province,China(Grant No.2020AAA003)the Major Program(JD)of Hubei Province(Grant No.2023BAA015).
文摘Neural networks have provided faster and more straightforward solutions for laser modulation.However,their effectiveness when facing diverse structured lights and various output resolutions remains vulnerable because of the specialized end-to-end training and static model.Here,we propose a redefinable neural network(RediNet),realizing customized modulation on diverse structured light arrays through a single general approach.The network input format features a redefinable dimension designation,which ensures RediNet wide applicability and removes the burden of processing pixel-wise light distributions.The prowess of originally generating arbitrary-resolution holograms with a fixed network is first demonstrated.The versatility is showcased in the generation of 2D/3D foci arrays,Bessel and Airy beam arrays,(perfect)vortex beam arrays,and even snowflake-intensity arrays with arbitrarily built phase functions.A standout application is producing multichannel compound vortex beams,where RediNet empowers a spatial light modulator(SLM)to offer comprehensive multiplexing functionalities for free-space optical communication.Moreover,RediNet has the hitherto highest efficiency,only consuming 12 ms(faster than the mainstream SLM framerate of 60 Hz)for a 1000^(2)-resolution holograph,which is critical in real-time required scenarios.Considering the fine resolution,high speed,and unprecedented universality,RediNet can serve extensive applications,such as next-generation optical communication,parallel laser direct writing,and optical traps.
基金This work is supported by the National Natural Science Foundation of China(U22A20206,61922033,62275097)Open Project Program of Wuhan National Laboratory for Optoelectronics(2022WNLOKF007)China Postdoctoral Science Foundation(2022M711243).
文摘Self-assembly of particle-like dissipative solitons,in the presence of mutual interactions,emphasizes the vibrant concept of soliton molecules in varieties of laser resonators.Controllable manipulation of the molecular patterns,held by the degrees of freedom of internal motions,still remains challenging to explore more efficient and subtle tailoring approaches for the increasing demands.Here,we report a new phase-tailored quaternary encoding format based on the controllable internal assembly of dissipative soliton molecules.Artificial manipulation of the energy exchange of soliton-molecular elements stimulates the deterministic harnessing of the assemblies of internal dynamics.Self-assembled soliton molecules are tailored into four phase-defined regimes,thus constituting the phase-tailored quaternary encoding format.Such phase-tailored streams are endowed with great robustness and are resistant to significant timing jitter.All these results experimentally demonstrate the programmable phase tailoring and exemplify the application of the phase-tailored quaternary encoding,prospectively promoting high-capacity all-optical storage.
基金National Natural Science Foundation of China(61775067,61775072)Ministry of Education-Singapore(MOE2019-T1-001-111)National Research Foundation Singapore(NRF-CRP-18-2017-02).
文摘The evolution of soliton molecules emphasizes the complex soliton dynamics akin to matter molecules.Beyond the simplest soliton molecule-a soliton pair constituted by two bound pulses-soliton molecules with more constituents have more degrees of freedom because of the temporal pulse separations and relative phases.Here we detailedly characterize the transient dynamics of soliton triplets in fiber lasers by using the dispersive Fourier transform measurement.A particular form of leading,central,and tailing pulses is constructed to shed new light on more intriguing scenarios and fuel the molecular analogy.Especially the vibrating dynamics of the central and tailing pulses are captured near the regime of equally spaced soliton triplets,which is reminiscent of the recurrent timing jitters within multi-pulse structures.Further insights enable acess into a universal form of unequally spaced soliton triplets interpreted as 2+1 soliton molecules.Different binding strengths of intramo-lecular and intermolecular bonds are validated with respect to the diverse internal motions involved in this soliton triplet molcule.All these findings unveil the transient dynamics with more degrees of freedom as well as highlight the possible application for all-optical bit storage.
基金National Key R&D Program of China(2018YFB1801001)Fundamental Research Funds for the Central Universities(HUST 2020kfy XJJS007)+4 种基金National Natural Science Foundation of China(61875061)Protocol of the 9th Session of China-Croatia Scientific and Technological Cooperation Committee(9-28)Protocol of the 38th Session of China-Poland Scientific and Technological Cooperation Committee(6)National Agency for Academic Exchange in Poland(PPN/BCN/2019/1/00068)Foundation for Polish Science First TEAM POIR(04.04.00-00-1D64/16)。
文摘Fiber lasers are a paradigm of dissipative systems,which distinguish themselves from a Hamilton system where energy is conservative.Consequently,pulses generated in a fiber laser are always accompanied by the continuous wave(CW).Under certain hypothesis,pulses generated in a fiber laser can be considered as a soliton,a product of a Hamilton system.Therefore,all the descriptions of solitons of a fiber laser are approximate.Coexistence of solitons and the CW from a fiber laser prevents unveiling of real nonlinear dynamics in fiber lasers,such as soliton interactions.Pulse behavior in a fiber laser can be represented by the state of single pulse,the state of period doubling of single pulse,the states of two pulses either tightly bound or loosely distributed,the states of three pulses,and various combinations of the above-mentioned states.Recently,soliton distillation was proposed and numerically demonstrated based on the nonlinear Fourier transform(NFT)[J.Lightwave Technol.39,2542(2021)].Solitons can be separated from the coherent CW background.Therefore,it is feasible to isolate solitons from CW background in a fiber laser.Here,we applied the NFT to various pulses generated in a fiber laser,including single pulse,single pulse in period doubling,different double pulses,and multiple pulses.Furthermore,with the approach of soliton distillation,the corresponding pure solitons of those pulses are reconstructed.Simulation results suggest that the NFT can be used to identify soliton dynamics excluding CW influence in a fiber laser,which paves a new way for uncovering real soliton interaction in nonlinear systems.
基金National Natural Science Foundation of China(61922033,U22A20206)National Key Research and Development Program of China(2022YFC2203904)+2 种基金Open Project Program of Wuhan National Laboratory for Optoelectronics(2022WNLOKF007)Fundamental Research Funds for the Central Universities(2023CDJXY-041)Open Project Foundation of State Key Laboratory of Optical Fiber and Cable Manufacture Technology(YOFC)(SKLD2305)。
文摘Self-assembly of dissipative solitons arouses versatile configurations of molecular complexes,enriching intriguing dynamics in mode-locked lasers.The ongoing studies fuel the analogy between matter physics and optical solitons,and stimulate frontier developments of ultrafast optics.However,the behaviors of multiple constituents within soliton molecules still remain challenging to be precisely unveiled,regarding both the intramolecular and intermolecular motions.Here,we introduce the concept of“soliton isomer”to elucidate the molecular dynamics of multisoliton complexes.The time-lens and time-stretch techniques assisted temporal-spectral analysis reveals the diversity of assembly patterns,reminiscent of the“isomeric molecule”.Particularly,we study the fine energy exchange during the intramolecular motions,therefore gaining insights into the degrees of freedom of isomeric dynamics beyond temporal molecular patterns.All these findings further answer the question of how far the matter-soliton analogy reaches and pave an efficient route for assisting the artificial manipulation of multisoliton structures.
基金supported by the National Key R&D Program of China (No.2023YFB3610701)the Hubei Provincial Central-Guided Local Science and Technology Development Special Program (2023CGB001)+3 种基金the Hubei Provincial Key Research and Development Program (No.2022BAA009)the Major Science and Technology Special Project of Hubei Province (No.2021AAA009)the Wuhan Science and Technology Project (No.20210120020234244)the Major Program (JD) of Hubei Province (No.2023BAA015)。
文摘On-demand and real-time generation of arbitrary complex fields directly from the laser source holds significant appeal for myriad applications. In this Letter, we demonstrate a ring laser configuration capable of dynamically generating arbitrary transverse fields. In a ring laser resonator, two cascaded phase modulations are utilized, which permits the control of two beams with high efficiency and high fidelity. The zeroth-order beam is a fundamental Gaussian field that self-reproduces itself in the resonator. The first-order beam serves as the desired output field, which is separated from the selfreproduction mode to facilitate the on-demand manipulation of amplitude and phase. In the verification experiments,a series of typical Hermite–Gaussian(HG) modes, Laguerre–Gaussian(LG) modes, flat-top mode, and amplitude-only pattern“A” are generated from the ring laser configuration. This innovative ring laser resonator may open up new perspectives for the design of structured-light lasers, with potential impacts in applications such as particle manipulation, advanced microscopy, and next-generation optical communication.
