We experimentally demonstrate the generation of sub-100-fs pulses from a diode-pumped passively mode-locked Yb：Y3ScAl4O12 （Yb：YSAG） ceramic laser. Stable mode-locked pulses as short as 96 fs at the central wavelen...We experimentally demonstrate the generation of sub-100-fs pulses from a diode-pumped passively mode-locked Yb：Y3ScAl4O12 （Yb：YSAG） ceramic laser. Stable mode-locked pulses as short as 96 fs at the central wavelength of 1052 nm with a repetition rate of -102 MHz are obtained. The laser has a maximum average output power of 51 mW. To the best of our knowledge, these are so far the shortest pulses and the first demonstration of sub-100- fs pulses obtained from the mode-locked Yb：YSAG ceramic lasers.展开更多
We report on the study of single-mode fiber-laser-pumped mode-locked Yb:CALYO lasers via using a passive saturable absorber and Kerr-lens mode-locking technique,respectively.Up to 3.1-W average power with 103-fs pulse...We report on the study of single-mode fiber-laser-pumped mode-locked Yb:CALYO lasers via using a passive saturable absorber and Kerr-lens mode-locking technique,respectively.Up to 3.1-W average power with 103-fs pulse duration is obtained from the passive mode-locking,and down to 36-fs pulse duration with more than 2-W average power is achieved by the pure Kerr-lens mode-locking,which is to the best of our knowledge,the highest average power from a reported sub-40-fs Yb-based solid-state oscillator.展开更多
We report generation of sub-100 fs pulses tunable from 1700 to 2100 nm via Raman soliton self-frequency shift.The nonlinear shift occurs in a highly nonlinear fiber, which is pumped by an Er-doped fiber laser. The who...We report generation of sub-100 fs pulses tunable from 1700 to 2100 nm via Raman soliton self-frequency shift.The nonlinear shift occurs in a highly nonlinear fiber, which is pumped by an Er-doped fiber laser. The whole system is fully fiberized, without the use of any free-space optics. Thanks to its exceptional simplicity, the setup can be considered as an alternative to mode-locked Tm-and Ho-doped fiber lasers.展开更多
Patterned nanostructures with ultrasmall features endow functional devices with unique nanoconfinement and performance enhancements.The increasing demand for miniaturization has stimulated the development of sub-100 n...Patterned nanostructures with ultrasmall features endow functional devices with unique nanoconfinement and performance enhancements.The increasing demand for miniaturization has stimulated the development of sub-100 nm nanopatterning techniques.Beyond conventional lithography—which is limited by unavoidable factors—advanced patterning techniques have been reported to produce nanoscale features down to molecular or even atomic scale.In this review,unconventional techniques for sub-100 nm nanopatterning are discussed,in particular the principles by which to achieve the desired patterns(among other important issues).Such techniques can be classified into three categories:template-replica,template-induced,and template-free techniques.Moreover,multi-dimensional nanostructures consist of various building materials,the unique properties of which are summarized.Finally,the remaining challenges and opportunities for large-scale patterning,the improvement of device perfor-mance,the multi-dimensional nanostructures of biocompatible materials,molecular-scale patterning,and the carbon footprint requirements for future nanofabrication processes are discussed.展开更多
We have experimentally demonstrated pulses 0.4 mJ in duration smaller than 12 fs with an excellent spatial beam profile by self-guided propagation in argon. The original 52 fs pulses from the chirped pulsed amplificat...We have experimentally demonstrated pulses 0.4 mJ in duration smaller than 12 fs with an excellent spatial beam profile by self-guided propagation in argon. The original 52 fs pulses from the chirped pulsed amplification laser system are first precompressed to 32 fs by inserting an acoustic optical programmable dispersive filter instrument into the laser system for spectrum reshaping and dispersion compensation, and the pulse spectrum is subsequently broadened by filamentation in an argon cell. By using chirped mirrors for post-dispersion compensation, the pulses are successfully compressed to smaller than 12 fs.展开更多
基金partially supported by the National Natural Science Foundation of China(No.61575089)the Priority Academic Program Development of Jiangsu Higher Education Institutionsthe fund of the Ministry of Education(MOE),Singapore(Grant No.2016-T1-001-026)
文摘We experimentally demonstrate the generation of sub-100-fs pulses from a diode-pumped passively mode-locked Yb：Y3ScAl4O12 （Yb：YSAG） ceramic laser. Stable mode-locked pulses as short as 96 fs at the central wavelength of 1052 nm with a repetition rate of -102 MHz are obtained. The laser has a maximum average output power of 51 mW. To the best of our knowledge, these are so far the shortest pulses and the first demonstration of sub-100- fs pulses obtained from the mode-locked Yb：YSAG ceramic lasers.
基金supported by the National Key Basic Research Program of China(No.2017YFB0405202)National Natural Science Foundation of China(NSFC)(Nos.61705174 and 11774277)+2 种基金Natural Science Basic Research Plan in Shaanxi Province of China(No.2018JQ6061)Open Research Fund of the State Key Laboratory of Pulsed Power Laser TechnologyElectronic Engineering Institute,Hefei,China(No.SKL2017KF04)。
文摘We report on the study of single-mode fiber-laser-pumped mode-locked Yb:CALYO lasers via using a passive saturable absorber and Kerr-lens mode-locking technique,respectively.Up to 3.1-W average power with 103-fs pulse duration is obtained from the passive mode-locking,and down to 36-fs pulse duration with more than 2-W average power is achieved by the pure Kerr-lens mode-locking,which is to the best of our knowledge,the highest average power from a reported sub-40-fs Yb-based solid-state oscillator.
基金Narodowe Centrum Nauki(NCN)(2014/13/D/ST7/02090,2014/13/D/ST7/02143)Wroclaw University of Science and Technology(0401/0094/16)
文摘We report generation of sub-100 fs pulses tunable from 1700 to 2100 nm via Raman soliton self-frequency shift.The nonlinear shift occurs in a highly nonlinear fiber, which is pumped by an Er-doped fiber laser. The whole system is fully fiberized, without the use of any free-space optics. Thanks to its exceptional simplicity, the setup can be considered as an alternative to mode-locked Tm-and Ho-doped fiber lasers.
基金Beijing National Laboratory for Molecular Sciences,Grant/Award Numbers:2019BMS20003,BNLMS-CXXM-202005CAS-VPST Silk Road Science Fund 2022,Grant/Award Number:121111KYSB20210006+3 种基金K.C.Wong Education Foundation,China Postdoctoral Science Foundation,Grant/Award Number:2020M670466External Cooperation Program of Chinese Academy of Sciences,Grant/Award Number:GJHZ201948the National Key R&D Program of China,Grant/Award Numbers:2018YFA0208501,2018YFA0703200the National Nature Science Foundation of China,Grant/Award Numbers:22002171,22175185,51773206,51803217,51961145102,52003273,52003276,91963212。
文摘Patterned nanostructures with ultrasmall features endow functional devices with unique nanoconfinement and performance enhancements.The increasing demand for miniaturization has stimulated the development of sub-100 nm nanopatterning techniques.Beyond conventional lithography—which is limited by unavoidable factors—advanced patterning techniques have been reported to produce nanoscale features down to molecular or even atomic scale.In this review,unconventional techniques for sub-100 nm nanopatterning are discussed,in particular the principles by which to achieve the desired patterns(among other important issues).Such techniques can be classified into three categories:template-replica,template-induced,and template-free techniques.Moreover,multi-dimensional nanostructures consist of various building materials,the unique properties of which are summarized.Finally,the remaining challenges and opportunities for large-scale patterning,the improvement of device perfor-mance,the multi-dimensional nanostructures of biocompatible materials,molecular-scale patterning,and the carbon footprint requirements for future nanofabrication processes are discussed.
基金Supported by the National Natural Science Foundation of China under Grant No 60578049, and the Major Basic Research Project of Shanghai Commission of Science and Technology under Grant No 04dz14001.
文摘We have experimentally demonstrated pulses 0.4 mJ in duration smaller than 12 fs with an excellent spatial beam profile by self-guided propagation in argon. The original 52 fs pulses from the chirped pulsed amplification laser system are first precompressed to 32 fs by inserting an acoustic optical programmable dispersive filter instrument into the laser system for spectrum reshaping and dispersion compensation, and the pulse spectrum is subsequently broadened by filamentation in an argon cell. By using chirped mirrors for post-dispersion compensation, the pulses are successfully compressed to smaller than 12 fs.
