To the best of our knowledge,this is the first time that a mid-infrared Er^(3+):CaF_(2)-SrF_(2) laser has achieved continuous-wave mode-locked operation by a semiconductor saturable absorber mirror.The laser emits a m...To the best of our knowledge,this is the first time that a mid-infrared Er^(3+):CaF_(2)-SrF_(2) laser has achieved continuous-wave mode-locked operation by a semiconductor saturable absorber mirror.The laser emits a maximum output power of 93 mW at 2.73μm with a repetition rate of approximately 69 MHz and demonstrates a high signal-to-noise ratio of around 71 dB.In addition,a MgF_(2) birefringent plate was utilized to enable wavelength tuning of the Er^(3+):CaF_(2)-SrF_(2) laser,resulting in operation at approximately 2.73μm,2.75μm,2.79μm,and 2.81μm.These results demonstrate that Er^(3+):CaF_(2)-SrF_(2) is a promising alternative for the generation of efficient diode-pumped mode-locked lasers around 2.8μm.展开更多
A new disordered crystal Nd:SrAl12O19(Nd:SRA)with an Nd3+doping concentration of 5%was successfully grown using the Czochralski method.A diode-pumped Nd:SRA Q-switched laser operating at 1049 nm was demonstrated for t...A new disordered crystal Nd:SrAl12O19(Nd:SRA)with an Nd3+doping concentration of 5%was successfully grown using the Czochralski method.A diode-pumped Nd:SRA Q-switched laser operating at 1049 nm was demonstrated for the first time,to the best of our knowledge.Based on an MXene Ti3C2Tx sheet,a high repetition rate of 201 kHz and a Q-switched pulse width of 346 ns were obtained when the absorbed pump power was 2.8 W.The peak power and single pulse energy were 1.87 W and 0.65μJ,respectively.展开更多
Graphdiyne(GDY),a novel all-carbon nanomaterial,is considered the most easily synthesized and stable carbon allotrope,positioning it as a promising photoelectric material.Herein,we successfully fabricated a high-quali...Graphdiyne(GDY),a novel all-carbon nanomaterial,is considered the most easily synthesized and stable carbon allotrope,positioning it as a promising photoelectric material.Herein,we successfully fabricated a high-quality GDY saturable absorber and saturable absorber mirror.Both broadband nonlinear saturable absorption and ultrafast relaxation dynamic properties in midinfrared region of the GDY were investigated.All solid-state diode-pumped short and ultrashort pulsed lasers were realized using the GDY absorber at wavelengths of 2 and 2.8μm,respectively.The results were then theoretically analyzed.This is the first presentation of ultrashort pulsed lasers in the mid-infrared region with GDY absorbers.These results resolutely confirm that GDY could be an optional broadband SA for all solid-state mid-infrared pulsed lasers,and they evidence its promising applications in mode-locked ultrafast lasers.展开更多
基金This work was supported by the National Natural Science Foundation of China(Nos.12374401,12104271,and 61925508)the Natural Science Foundation of Shandong Province(Nos.ZR2021LLZ008 and ZR2021QA030)the China Postdoctoral Science Foundation(No.2021M691981).
文摘To the best of our knowledge,this is the first time that a mid-infrared Er^(3+):CaF_(2)-SrF_(2) laser has achieved continuous-wave mode-locked operation by a semiconductor saturable absorber mirror.The laser emits a maximum output power of 93 mW at 2.73μm with a repetition rate of approximately 69 MHz and demonstrates a high signal-to-noise ratio of around 71 dB.In addition,a MgF_(2) birefringent plate was utilized to enable wavelength tuning of the Er^(3+):CaF_(2)-SrF_(2) laser,resulting in operation at approximately 2.73μm,2.75μm,2.79μm,and 2.81μm.These results demonstrate that Er^(3+):CaF_(2)-SrF_(2) is a promising alternative for the generation of efficient diode-pumped mode-locked lasers around 2.8μm.
基金supported by the National Natural Science Foundation of China(NSFC)(No.11974220)。
文摘A new disordered crystal Nd:SrAl12O19(Nd:SRA)with an Nd3+doping concentration of 5%was successfully grown using the Czochralski method.A diode-pumped Nd:SRA Q-switched laser operating at 1049 nm was demonstrated for the first time,to the best of our knowledge.Based on an MXene Ti3C2Tx sheet,a high repetition rate of 201 kHz and a Q-switched pulse width of 346 ns were obtained when the absorbed pump power was 2.8 W.The peak power and single pulse energy were 1.87 W and 0.65μJ,respectively.
基金the National Natural Science Foundation of China(Grant Nos.11974220,61635012,61675135,and 61905149)the Natural Science Foundation of Guangdong Province(Grant No.2019A1515011415)。
文摘Graphdiyne(GDY),a novel all-carbon nanomaterial,is considered the most easily synthesized and stable carbon allotrope,positioning it as a promising photoelectric material.Herein,we successfully fabricated a high-quality GDY saturable absorber and saturable absorber mirror.Both broadband nonlinear saturable absorption and ultrafast relaxation dynamic properties in midinfrared region of the GDY were investigated.All solid-state diode-pumped short and ultrashort pulsed lasers were realized using the GDY absorber at wavelengths of 2 and 2.8μm,respectively.The results were then theoretically analyzed.This is the first presentation of ultrashort pulsed lasers in the mid-infrared region with GDY absorbers.These results resolutely confirm that GDY could be an optional broadband SA for all solid-state mid-infrared pulsed lasers,and they evidence its promising applications in mode-locked ultrafast lasers.
