We demonstrate a high power,Er:Lu AG single-longitudinal-mode laser in an anti-misaligned resonator.Based on the Faraday effect,a 1.61 W single-longitudinal-mode(SLM)laser is obtained with the double corner-cube-retro...We demonstrate a high power,Er:Lu AG single-longitudinal-mode laser in an anti-misaligned resonator.Based on the Faraday effect,a 1.61 W single-longitudinal-mode(SLM)laser is obtained with the double corner-cube-retroreflector(CCR)structure,and the tunable wavelength is 1649.2-1650.3 nm.Additionally,we investigate the anti-misalignment characteristics when the CCR moves and rotates along the optical axis.Furthermore,by utilizing the Er:Lu AG amplifier,the maximum 2.32 W single-longitudinal-mode laser at 1649.6 nm is achieved.The beam quality factors M^(2) of the 2.32 W Er:Lu AG single-longitudinal-mode laser are 1.23 and 1.25 along the horizontal(x)and vertical(y)directions,respectively.展开更多
We report efficient power scaling of the laser output with an adaptive bemn profile from an Nd：YAG dual-cavity master oscillator using a three-stage end-pumped Nd：YVO4 amplifier. We succeed ill the last switching of...We report efficient power scaling of the laser output with an adaptive bemn profile from an Nd：YAG dual-cavity master oscillator using a three-stage end-pumped Nd：YVO4 amplifier. We succeed ill the last switching of an excited laser mode by modulating an acousto-optic modulator loss in a dual-cavity master oscillator, thereby achieving temporal modulation of the output beam profile. The outputs from the master oscillator are amplified via a three-stage power amplifier yielding 36.6, 40.5, and 45.4 W of the maximum output at 116.8 W of incident pump power for the transverse electromagnetic, Laguerre-Gaussian, and quasi-top-hat beam, respectively. The prospects for further power scaling and applications via the dual-cavity master-oscillator power-amplifier （MOPA） system are considered.展开更多
We demonstrate, for the first time, to the best of our knowledge, an all-fiber figure-of-9 double-clad Tm-doped fiber laser operating in the dissipative soliton resonance(DSR) regime. Stable mode-locked rectangular pu...We demonstrate, for the first time, to the best of our knowledge, an all-fiber figure-of-9 double-clad Tm-doped fiber laser operating in the dissipative soliton resonance(DSR) regime. Stable mode-locked rectangular pulses are obtained by using the nonlinear amplifying loop mirror(NALM) technique. A long spool of high-nonlinearity fiber(HNLF) and a segment of SMF-28 fiber are used to enhance the nonlinearity of the NALM loop and to obtain a large all-anomalous regime. Output power and pulse energy are further boosted by using a three-stage master oscillator power amplifier(MOPA) system. At the maximum pump power, average output power of up to 104.3 W with record pulse energy of 0.33 mJ is achieved with a 2 μm DSR-based MOPA system.展开更多
为了研制激光干涉成像所需的基于主振荡功率放大（Master Oscillator Power Amplifier,MOPA）结构的高能高相干脉冲单频激光器,需要研究经过功率放大后的脉冲时间相干性随激光功率（或能量）增加的变化趋势。本文采用声光调Q脉冲单频Nd...为了研制激光干涉成像所需的基于主振荡功率放大（Master Oscillator Power Amplifier,MOPA）结构的高能高相干脉冲单频激光器,需要研究经过功率放大后的脉冲时间相干性随激光功率（或能量）增加的变化趋势。本文采用声光调Q脉冲单频Nd：YVO_4激光器作为种子源,利用Nd：YAG功率放大模块对种子源激光进行2.1倍的脉冲能量放大。利用迈氏干涉测量法,完成种子源和2.1倍功放后激光在0～6 m光程差下干涉条纹对比度的实验测量,从而初步得到脉冲激光时间相干性（线宽）随激光功率（或能量）增加的变化趋势。同时也完成种子源和功放后激光的单频性、单脉冲能量、脉宽和峰值功率等基本参数的实验测量。展开更多
报道了一种基于主振荡—功率放大(MOPA)方式工作的脉冲激光器。为了获得高重复频率、高平均功率的激光输出,采用尺寸为4 mm×35 mm×160 mm,掺杂浓度为1%的Nd∶YAG薄板条。通过对侧面出光的浸入式板条激光器进行LD阵列侧面泵浦...报道了一种基于主振荡—功率放大(MOPA)方式工作的脉冲激光器。为了获得高重复频率、高平均功率的激光输出,采用尺寸为4 mm×35 mm×160 mm,掺杂浓度为1%的Nd∶YAG薄板条。通过对侧面出光的浸入式板条激光器进行LD阵列侧面泵浦,在泵浦光平均功率为15 k W时,实现了稳定的4.15 k W的激光输出,谐振腔的光光转换效率为27.7%。在此基础上,采用两个放大模块建立了一级振荡二级放大的MOPA装置,输出光平均功率达6.4 k W。展开更多
基金supported by the National Natural Science Foundation of China(Nos.U20A20214 and 62275067)。
文摘We demonstrate a high power,Er:Lu AG single-longitudinal-mode laser in an anti-misaligned resonator.Based on the Faraday effect,a 1.61 W single-longitudinal-mode(SLM)laser is obtained with the double corner-cube-retroreflector(CCR)structure,and the tunable wavelength is 1649.2-1650.3 nm.Additionally,we investigate the anti-misalignment characteristics when the CCR moves and rotates along the optical axis.Furthermore,by utilizing the Er:Lu AG amplifier,the maximum 2.32 W single-longitudinal-mode laser at 1649.6 nm is achieved.The beam quality factors M^(2) of the 2.32 W Er:Lu AG single-longitudinal-mode laser are 1.23 and 1.25 along the horizontal(x)and vertical(y)directions,respectively.
基金supported by the National Research Foundation of Korea(NRF)(No.501100003725)the Basic Science Research Program(No.NRF-2014R1A1A2A16053885)+1 种基金the Korean National Police Agency(No.501100003600)the Projects for Research and Development of Police science and Technology(No.Pa-B000001)
文摘We report efficient power scaling of the laser output with an adaptive bemn profile from an Nd：YAG dual-cavity master oscillator using a three-stage end-pumped Nd：YVO4 amplifier. We succeed ill the last switching of an excited laser mode by modulating an acousto-optic modulator loss in a dual-cavity master oscillator, thereby achieving temporal modulation of the output beam profile. The outputs from the master oscillator are amplified via a three-stage power amplifier yielding 36.6, 40.5, and 45.4 W of the maximum output at 116.8 W of incident pump power for the transverse electromagnetic, Laguerre-Gaussian, and quasi-top-hat beam, respectively. The prospects for further power scaling and applications via the dual-cavity master-oscillator power-amplifier （MOPA） system are considered.
基金National Natural Science Foundation of China(NSFC)(11704260,61575129,61605122,61775146)Natural Science Foundation of Guangdong Province(2016A030310049)+1 种基金Major Science and Technology Project of Guangdong Province(2014B010131006)Shenzhen Science and Technology Project(JCYJ20160427105041864,JSGG20160429114438287,KQJSCX20160226194031)
文摘We demonstrate, for the first time, to the best of our knowledge, an all-fiber figure-of-9 double-clad Tm-doped fiber laser operating in the dissipative soliton resonance(DSR) regime. Stable mode-locked rectangular pulses are obtained by using the nonlinear amplifying loop mirror(NALM) technique. A long spool of high-nonlinearity fiber(HNLF) and a segment of SMF-28 fiber are used to enhance the nonlinearity of the NALM loop and to obtain a large all-anomalous regime. Output power and pulse energy are further boosted by using a three-stage master oscillator power amplifier(MOPA) system. At the maximum pump power, average output power of up to 104.3 W with record pulse energy of 0.33 mJ is achieved with a 2 μm DSR-based MOPA system.
文摘为了研制激光干涉成像所需的基于主振荡功率放大（Master Oscillator Power Amplifier,MOPA）结构的高能高相干脉冲单频激光器,需要研究经过功率放大后的脉冲时间相干性随激光功率（或能量）增加的变化趋势。本文采用声光调Q脉冲单频Nd：YVO_4激光器作为种子源,利用Nd：YAG功率放大模块对种子源激光进行2.1倍的脉冲能量放大。利用迈氏干涉测量法,完成种子源和2.1倍功放后激光在0～6 m光程差下干涉条纹对比度的实验测量,从而初步得到脉冲激光时间相干性（线宽）随激光功率（或能量）增加的变化趋势。同时也完成种子源和功放后激光的单频性、单脉冲能量、脉宽和峰值功率等基本参数的实验测量。
文摘报道了一种基于主振荡—功率放大(MOPA)方式工作的脉冲激光器。为了获得高重复频率、高平均功率的激光输出,采用尺寸为4 mm×35 mm×160 mm,掺杂浓度为1%的Nd∶YAG薄板条。通过对侧面出光的浸入式板条激光器进行LD阵列侧面泵浦,在泵浦光平均功率为15 k W时,实现了稳定的4.15 k W的激光输出,谐振腔的光光转换效率为27.7%。在此基础上,采用两个放大模块建立了一级振荡二级放大的MOPA装置,输出光平均功率达6.4 k W。
