Carbon ion irradiation and precise diamond blade dicing are applied to fabricate Nd∶GdCOB ridge waveguides.The propagation properties of the fabricated Nd∶GdCOB waveguides are investigated through experiments and th...Carbon ion irradiation and precise diamond blade dicing are applied to fabricate Nd∶GdCOB ridge waveguides.The propagation properties of the fabricated Nd∶GdCOB waveguides are investigated through experiments and theoret-ical analysis.Micro-Raman analysis reveals that the Nd∶GdCOB crystal lattice expands during the irradiation process.Micro-second harmonic spectroscopic analysis suggests that the original nonlinear properties of the Nd∶GdCOB crystal are greatly enhanced within the waveguide volume.Under pulsed 1064 nm laser pumping,second harmonic generation(SHG)at 532 nm has been achieved in the fabricated waveguides.The maximum SHG conversion efficiencies are determined to be~8.32%·W^(-1) and~22.36%·W^(-1) for planar and ridge waveguides,respectively.展开更多
Copper(Cu)nanoparticles(NPs)are synthesized under the near-surface region of the Nd∶Y_(3)Al_(5)O_(12)(Nd:YAG)crystal by direct Cu^(+)ions implantation.Subsequently,the monolithic ridge waveguide with embedded Cu NPs ...Copper(Cu)nanoparticles(NPs)are synthesized under the near-surface region of the Nd∶Y_(3)Al_(5)O_(12)(Nd:YAG)crystal by direct Cu^(+)ions implantation.Subsequently,the monolithic ridge waveguide with embedded Cu NPs is fabricated by C^(4+)ions irradiation and diamond saw dicing.The nonlinear optical response of the sample is investigated by the Z-scan technique,and pronounced saturable absorption is observed at the 1030 nm femtosecond laser.Based on the obvious saturable absorption of Cu NPs embedded Nd:YAG crystal,1μm monolithic mode-locked pulsed waveguide laser is implemented by evanescent field interaction between NPs and waveguide modes,reaching the pulse duration of 24.8 ps and repetition rate of 7.8 GHz.The work combines waveguides with NPs,achieving pulsed laser devices based on monolithic waveguide chips.展开更多
Graphene and other extraordinary two-dimensional materials together with recent advances in optical modulators have set the foundations for the widespread applications of next-generation optoelectronic devices. In thi...Graphene and other extraordinary two-dimensional materials together with recent advances in optical modulators have set the foundations for the widespread applications of next-generation optoelectronic devices. In this work, we report on the high-performance fundamentally mode-locked waveguide laser modulated by chemicalvapor-deposition-grown WSe2 as a saturable absorber. By incorporating a WSe2 sample into a monolithic Nd:YVO4 waveguide platform, 6.526 GHz picosecond pulsed laser generation has been achieved at the wavelength of 1 μm with pulse duration of 47 ps.展开更多
基金Project supported by the Taishan Scholars Youth Expert Program of Shandong Provincethe Qilu Young Scholar Program of Shandong University, China
文摘Carbon ion irradiation and precise diamond blade dicing are applied to fabricate Nd∶GdCOB ridge waveguides.The propagation properties of the fabricated Nd∶GdCOB waveguides are investigated through experiments and theoret-ical analysis.Micro-Raman analysis reveals that the Nd∶GdCOB crystal lattice expands during the irradiation process.Micro-second harmonic spectroscopic analysis suggests that the original nonlinear properties of the Nd∶GdCOB crystal are greatly enhanced within the waveguide volume.Under pulsed 1064 nm laser pumping,second harmonic generation(SHG)at 532 nm has been achieved in the fabricated waveguides.The maximum SHG conversion efficiencies are determined to be~8.32%·W^(-1) and~22.36%·W^(-1) for planar and ridge waveguides,respectively.
基金supported by the National Natural Science Foundation of China(NSFC)(Nos.11535008 and 61975221)the Major Program of Natural Science Foundation of Shandong Province(No.ZR2018ZB0649)。
文摘Copper(Cu)nanoparticles(NPs)are synthesized under the near-surface region of the Nd∶Y_(3)Al_(5)O_(12)(Nd:YAG)crystal by direct Cu^(+)ions implantation.Subsequently,the monolithic ridge waveguide with embedded Cu NPs is fabricated by C^(4+)ions irradiation and diamond saw dicing.The nonlinear optical response of the sample is investigated by the Z-scan technique,and pronounced saturable absorption is observed at the 1030 nm femtosecond laser.Based on the obvious saturable absorption of Cu NPs embedded Nd:YAG crystal,1μm monolithic mode-locked pulsed waveguide laser is implemented by evanescent field interaction between NPs and waveguide modes,reaching the pulse duration of 24.8 ps and repetition rate of 7.8 GHz.The work combines waveguides with NPs,achieving pulsed laser devices based on monolithic waveguide chips.
基金supported by the National Natural Science Foundation of China(No.61775120)
文摘Graphene and other extraordinary two-dimensional materials together with recent advances in optical modulators have set the foundations for the widespread applications of next-generation optoelectronic devices. In this work, we report on the high-performance fundamentally mode-locked waveguide laser modulated by chemicalvapor-deposition-grown WSe2 as a saturable absorber. By incorporating a WSe2 sample into a monolithic Nd:YVO4 waveguide platform, 6.526 GHz picosecond pulsed laser generation has been achieved at the wavelength of 1 μm with pulse duration of 47 ps.
