We demonstrate a cw and actively Q-switched Er.LuAG laser resonantly dual-end-pumped by 1532 nm fibrecoupled laser diodes.A maximum cw output power of 1.9W at 1650.3nm is obtained at a pump power of 25.5 W,correspondi...We demonstrate a cw and actively Q-switched Er.LuAG laser resonantly dual-end-pumped by 1532 nm fibrecoupled laser diodes.A maximum cw output power of 1.9W at 1650.3nm is obtained at a pump power of 25.5 W,corresponding to a slope efficiency of 43.3%.In the Q-switched regime,the maximum pulse energy of3.51 mJ is reached at a pulse repetition rate of 100 Hz,a pulse duration of 90.5 ns and a pump power of 25.5 W.At the repetition rate of 400 Hz,the output energy is 2.12 mJ,corresponding to a pulse duration of 125.4 ns.展开更多
We demonstrate a Fe:ZnSe laser gain-switched by a 2.9 m ZnGeP2 optical parametric oscillator under pulse repetition frequency of 1 kHz at liquid nitrogen temperature of 77 K. The maximum output power is 63 m W with pu...We demonstrate a Fe:ZnSe laser gain-switched by a 2.9 m ZnGeP2 optical parametric oscillator under pulse repetition frequency of 1 kHz at liquid nitrogen temperature of 77 K. The maximum output power is 63 m W with pulse duration of 34.4 ns. The wavelength covers 3686.6–4088.6 nm and centers at 3897.7 nm. The output power decreases with increasing the temperature of the crystal in 77–222 K.展开更多
We demonstrated an Fe:ZnSe laser pumped by a 2.93-μm Cr, Er:YAG laser at liquid nitrogen and room temperature in single-shot free-running operation for the first time. The xenon flash lamp pumped Cr, Er:YAG laser had...We demonstrated an Fe:ZnSe laser pumped by a 2.93-μm Cr, Er:YAG laser at liquid nitrogen and room temperature in single-shot free-running operation for the first time. The xenon flash lamp pumped Cr, Er:YAG laser had a maximum single pulse energy of 1.414 J, and the threshold and slope efficiency were 141.70 J and 0.70% which were respectively reduced by 29.3% and increased by 52.2% compared with the Er:YAG laser. At liquid nitrogen temperature of 77 K, the maximum single pulse energy of the Fe:ZnSe laser was 197.6 m J, corresponding to a slope efficiency of 13.4%. The central wavelength and full width at half maximum(FWHM) linewidth were 4037.4 nm and 122.0 nm, respectively. At room temperature, the laser generated a maximum single pulse energy of 3.5 mJ at the central wavelength of 4509.6 nm with an FWHM linewidth of 171.5 nm.展开更多
We demonstrate a gain-switched Fe:ZnSe laser pumped by a 2958 nm pulsed Ho,Pr:LLF laser. The maximum single pulse energy is 16.4uJ with a minimum pulse duration of 13.9 ns at the pulse repetition frequency of1 Hz when...We demonstrate a gain-switched Fe:ZnSe laser pumped by a 2958 nm pulsed Ho,Pr:LLF laser. The maximum single pulse energy is 16.4uJ with a minimum pulse duration of 13.9 ns at the pulse repetition frequency of1 Hz when the Fe:ZnSe crystal is cooled to 77 K by liquid nitrogen, corresponding to a slope efficiency of 22.9%.The central wavelength and FWHM linewidth are 3957.4 nm and 23.2 nm, respectively. The output energy monotonically decreases as the crystal temperature increases in the range 77–293 K.展开更多
An actively mode-locked Ho:YAG laser pumped by a diode-pumped Tm-doped fiber laser is reported.For the cw operation,we obtain the maximum output power of 3.43 W with a central wavelength 2022.2 nm at the maximum incid...An actively mode-locked Ho:YAG laser pumped by a diode-pumped Tm-doped fiber laser is reported.For the cw operation,we obtain the maximum output power of 3.43 W with a central wavelength 2022.2 nm at the maximum incident pump power of 11.4 W,corresponding to a slope efficiency of 34.5%.The beam quality factor M2 is 1.16,and the output beam is close to fundamental TEM_(00) In the case of the CWML operation,a stable pulse train is generated with an average output power up to 3.41 W with a slope efficiency of 34.3%at the incident pump power of 11.4 W and a pulse duration of 294 ps at a repetition rate of 81.92 MHz.In addition,the maximum single pulse energy is 41.6 n J.展开更多
We present a single-longitudinal-mode continuous-wave Ho^(3+):YVO_4 laser at 2.05 μm pumped by a Tm-doped fibre laser. Use of a cavity etalon enables spectral selectivity for single-mode operation. The highest power ...We present a single-longitudinal-mode continuous-wave Ho^(3+):YVO_4 laser at 2.05 μm pumped by a Tm-doped fibre laser. Use of a cavity etalon enables spectral selectivity for single-mode operation. The highest power achieved in the single longitudinal mode at 2052.5 nm is 282 mW at a slope efficiency of 6.9%, corresponding to an optical conversion efficiency of 3.0%. These features demonstrate that this single-longitudinal-mode Ho:YVO_4 laser is suitable for use as a seed laser in some Lidar systems(e.g., coherent Lidar or differential absorption Lidar). To the best of our knowledge, this is the first report on such a single-longitudinal-mode Ho:YVO_4 laser at 2.05 μm.展开更多
We present a Tm-doped fiber laser pumped Fabry-Perot etalons Ho:YAG laser based on a corner cube.A maximum single-longitudinal-mode and fundamental transverse mode output power of 478 mW at the waveiength of 2091.06 n...We present a Tm-doped fiber laser pumped Fabry-Perot etalons Ho:YAG laser based on a corner cube.A maximum single-longitudinal-mode and fundamental transverse mode output power of 478 mW at the waveiength of 2091.06 nm is achieved with a pump power of 16.3 W,corresponding to an opticai-to-optical efficiency of 2.9%and a slope efficiency of 7.9%.The single-longitudinal-mode and fundamental transverse mode are less sensitive to the rotating of the corner cube.The results indicate the potential impact of a single-longitudinal-mode Ho:YAG laser with corner cube geometry to improve the anti-maladjustment stability.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 61308009 and 61405047the China Postdoctoral Science Foundation Funded Project under Grant No 2013M540288+2 种基金the Fundamental Research Funds for the Central Universities under Grant Nos HIT.NSRIF.2014044 and HIT.NSRIF.2015042the Science Fund for Outstanding Youths of Heilongjiang Province under Grant No JQ201310the Heilongjiang Postdoctoral Science Foundation Funded Project under Grant No LBH-Z14085
文摘We demonstrate a cw and actively Q-switched Er.LuAG laser resonantly dual-end-pumped by 1532 nm fibrecoupled laser diodes.A maximum cw output power of 1.9W at 1650.3nm is obtained at a pump power of 25.5 W,corresponding to a slope efficiency of 43.3%.In the Q-switched regime,the maximum pulse energy of3.51 mJ is reached at a pulse repetition rate of 100 Hz,a pulse duration of 90.5 ns and a pump power of 25.5 W.At the repetition rate of 400 Hz,the output energy is 2.12 mJ,corresponding to a pulse duration of 125.4 ns.
基金Supported by the National Natural Science Foundation of China under Grant No 61308009, the China Postdoctoral Science Foundation under Grant No 2013M540288, and the Fundamental Research Fund for the Central Universities under Grant No HIT.NSRIF.2014044.
文摘我们表明连续波浪极化 p 的单个纵的模式(直线波松) 操作一 Er : 在二极管激光与三抽的 1617.6nm 的钇铝柘榴石激光插入了 FabryPerot (FP ) 在房间温度的 etalons。酿造者角度插入了 FP 被使用获得极化 p 的激光。为免费的跑，最大的产量力量是有 12.5 W 的泵力量的 570mW。12.5W 的事件泵力量被用来产生 78.5mW 的最大的极化 p 的单个纵的模式产量力量，相应于 1.6% 的斜坡效率和 0.61% 的 optical-to-optical 效率。横梁质量 M <SUB>2</SUB> 被测量在最高的直线波松产量力量是 1.15。这稳定的极化的直线波松摆动由于它为用作主人激光的一个锁注射的系统的应用程序是令人鼓舞的。
基金Supported by the National Natural Science Foundation of China under Grant No 51572053the Science Fund for Outstanding Youths of Heilongjiang Province under Grant No JQ201310
文摘We demonstrate a Fe:ZnSe laser gain-switched by a 2.9 m ZnGeP2 optical parametric oscillator under pulse repetition frequency of 1 kHz at liquid nitrogen temperature of 77 K. The maximum output power is 63 m W with pulse duration of 34.4 ns. The wavelength covers 3686.6–4088.6 nm and centers at 3897.7 nm. The output power decreases with increasing the temperature of the crystal in 77–222 K.
基金Project supported by the National Natural Science Foundation of China(Grant No.61405047)
文摘We demonstrated an Fe:ZnSe laser pumped by a 2.93-μm Cr, Er:YAG laser at liquid nitrogen and room temperature in single-shot free-running operation for the first time. The xenon flash lamp pumped Cr, Er:YAG laser had a maximum single pulse energy of 1.414 J, and the threshold and slope efficiency were 141.70 J and 0.70% which were respectively reduced by 29.3% and increased by 52.2% compared with the Er:YAG laser. At liquid nitrogen temperature of 77 K, the maximum single pulse energy of the Fe:ZnSe laser was 197.6 m J, corresponding to a slope efficiency of 13.4%. The central wavelength and full width at half maximum(FWHM) linewidth were 4037.4 nm and 122.0 nm, respectively. At room temperature, the laser generated a maximum single pulse energy of 3.5 mJ at the central wavelength of 4509.6 nm with an FWHM linewidth of 171.5 nm.
基金the National Natural Science Foundation of China under Grant No 61405047
文摘We demonstrate a gain-switched Fe:ZnSe laser pumped by a 2958 nm pulsed Ho,Pr:LLF laser. The maximum single pulse energy is 16.4uJ with a minimum pulse duration of 13.9 ns at the pulse repetition frequency of1 Hz when the Fe:ZnSe crystal is cooled to 77 K by liquid nitrogen, corresponding to a slope efficiency of 22.9%.The central wavelength and FWHM linewidth are 3957.4 nm and 23.2 nm, respectively. The output energy monotonically decreases as the crystal temperature increases in the range 77–293 K.
基金Supported by the National Natural Science Foundation of China under Grant Nos 61308009 and 61405047the China Postdoctoral Science Foundation Funded Project under Grant Nos 2013M540288 and 2015M570290+2 种基金the Fundamental Research Funds for the Central Universities Grant under Grant Nos HIT.NSRIF.2014044 and HIT.NSRIF.2015042the Science Fund for Outstanding Youths of Heilongjiang Province under Grant No JQ201310the Heilongjiang Postdoctoral Science Foundation Funded Project under Grant No LBH-Z14085
文摘An actively mode-locked Ho:YAG laser pumped by a diode-pumped Tm-doped fiber laser is reported.For the cw operation,we obtain the maximum output power of 3.43 W with a central wavelength 2022.2 nm at the maximum incident pump power of 11.4 W,corresponding to a slope efficiency of 34.5%.The beam quality factor M2 is 1.16,and the output beam is close to fundamental TEM_(00) In the case of the CWML operation,a stable pulse train is generated with an average output power up to 3.41 W with a slope efficiency of 34.3%at the incident pump power of 11.4 W and a pulse duration of 294 ps at a repetition rate of 81.92 MHz.In addition,the maximum single pulse energy is 41.6 n J.
基金supported by the National Natural Science Foundation of China(Grant Nos.61308009 and 61405047)the China Postdoctoral Science Foundation(Grant Nos.2016T90287 and 2015M570290)+1 种基金the Fundamental Research Funds for the Central Universities of China(Grant No.HIT.NSRIF.2015042)the Postdoctoral Science Foundation of Heilongjiang Province,China(Grant No.LBH-Z14085)
文摘We present a single-longitudinal-mode continuous-wave Ho^(3+):YVO_4 laser at 2.05 μm pumped by a Tm-doped fibre laser. Use of a cavity etalon enables spectral selectivity for single-mode operation. The highest power achieved in the single longitudinal mode at 2052.5 nm is 282 mW at a slope efficiency of 6.9%, corresponding to an optical conversion efficiency of 3.0%. These features demonstrate that this single-longitudinal-mode Ho:YVO_4 laser is suitable for use as a seed laser in some Lidar systems(e.g., coherent Lidar or differential absorption Lidar). To the best of our knowledge, this is the first report on such a single-longitudinal-mode Ho:YVO_4 laser at 2.05 μm.
基金Supported by the National Natural Science Foundation of China under Grant No 61308009, the China Postdoctoral Science Foundation under Grant No 2013M540288, and the Fundamental Research Funds for the Central Universities under Grant No HIT.NSRIF.2014044.
文摘高力量抽二极管的结合散开的 Tm : YLF 激光与不到 0.1 nm 的 FWHM 线宽在 1889.5 nm 操作被报导。一个布鲁斯特盘子和二 FabryPerot etalons 为光谱的变窄和稳定在激光洞被插入。在 136.8 W 的事件泵力量下面，产量力量的 46.1 W 被完成，相应于 33.7% 的 optical-to-optical 变换效率和 42.8% 的斜坡效率。仅仅有到 136.8 W 的从 20.1 W 的事件泵力量的 0.07 nm 的激光波长移动被观察。在最大的产量力量的 M <SUP>2</SUP> 因素被计算在 X 轴是 2.3 并且 2.0 在 Y 轴分别地。
基金Supported by the National Natural Science Foundation of China under Grant Nos 61308009 and 61405047the China Postdoctoral Science Foundation Funded Project under Grant No 2013M540288+2 种基金the Fundamental Research Funds for the Central Universities under Grant Nos HIT.NSRIF.2014044 and HIT.NSRIF.2015042the Science Fund for Outstanding Youths of Heilongjiang Province under Grant No JQ201310the Heilongjiang Postdoctoral Science Foundation Funded Project under Grant No LBH-Z14085
文摘We present a Tm-doped fiber laser pumped Fabry-Perot etalons Ho:YAG laser based on a corner cube.A maximum single-longitudinal-mode and fundamental transverse mode output power of 478 mW at the waveiength of 2091.06 nm is achieved with a pump power of 16.3 W,corresponding to an opticai-to-optical efficiency of 2.9%and a slope efficiency of 7.9%.The single-longitudinal-mode and fundamental transverse mode are less sensitive to the rotating of the corner cube.The results indicate the potential impact of a single-longitudinal-mode Ho:YAG laser with corner cube geometry to improve the anti-maladjustment stability.
基金Supported by the National Natural Science Foundation of China under Grant Nos 61308009,61405047 and 50990301the China Postdoctoral Science Foundation Funded Project under Grant No 2015T80339+1 种基金the Fundamental Research Funds for the Central Universities under Grant No HIT.NSRIF.2015042the Science Fund for Outstanding Youths of Heilongjiang Province under Grant No JQ201310
基金Supported by the National Natural Science Foundation of China under Grant Nos 61308009,61405047 and 50990301the Fundamental Research Funds for the Central Universities under Grant Nos HIT.NSRIF.2014044 and HIT.NSRIF.2015042the Science Fund for Outstanding Youths of Heilongjiang Province under Grant No JQ201310
基金Supported by the National Natural Science Foundation of China under Grant Nos 61308009 and 61405047the China Postdoctoral Science Foundation Funded Project under Grant No 2013M540288+1 种基金the Fundamental Research Funds for the Central Universities under Grant Nos HIT.NSRIF.2014044 and HIT.NSRIF.2015042the Science Fund for Outstanding Youths of Heilongjiang Province under Grant No JQ201310
基金Supported by the National Natural Science Foundation of China under Grant Nos 61308009,61405047 and 50990301the China Postdoctoral Science Foundation Funded Project under Grant No 2013M540288+2 种基金the Fundamental Research Funds for the Central Universities under Grant Nos HIT.NSRIF.2014044 and HIT.NSRIF.2015042the Science Fund for Outstanding Youths of Heilongjiang Province under Grant No JQ201310the Natural Science Foundation of Heilongjiang Province under Grant No LBH-Z14085
