A laser diode end-pumped passively mode-locked Nd：YVO4 solid-state laser with a semiconductor saturable ab- sorber mirror （SESAM）, in which the intracavity laser beam spot on the SESAM can be adjusted periodically,...A laser diode end-pumped passively mode-locked Nd：YVO4 solid-state laser with a semiconductor saturable ab- sorber mirror （SESAM）, in which the intracavity laser beam spot on the SESAM can be adjusted periodically, is investigated. Inserting a rectangular prism （RP） into the laser cavity is a promising approach towards the goal of periodically moving the position of the focus spot of the intracavity pulse on the SESAM surface to avoid the long-time irradiation of the laser beam on the same position, thereby solving a series of problems caused by damage to the SESAM and greatly prolonging its usage life. The adjustment of the rectangular prism in the laser cavity does not break the stable continuous wave （CW） mode-locked condition. The laser generates a stable picosecond pulse sequence at 1064 nm with an output power of 3.6 W and a pulse width of 14 ps. The instabilities of the output power and the pulse width are 1.77% and 4.5%, respectively.展开更多
报道了一种结构简单紧凑的输出波长为1487 nm的三阶斯托克斯调Q锁模(Simultaneously Q-switched and mode-locked(QML))自拉曼固体激光器。采用光纤耦合输出的大功率半导体激光器单端泵浦掺Nd原子浓度为0.3 at.%的Nd∶YVO4复合晶体,在...报道了一种结构简单紧凑的输出波长为1487 nm的三阶斯托克斯调Q锁模(Simultaneously Q-switched and mode-locked(QML))自拉曼固体激光器。采用光纤耦合输出的大功率半导体激光器单端泵浦掺Nd原子浓度为0.3 at.%的Nd∶YVO4复合晶体,在重复频率(pulse repetition rate(PRF))为25 k Hz,泵浦功率为24 W时,输出的波长为1487 nm,获得的最大平均输出功率为588 m W,锁模脉宽为21.09 ps,单脉冲能量为8.23μJ,峰值功率达到390 k W。展开更多
以半导体侧面泵浦Nd:YAG作为1 064 nm基频激光源,长度40 mm的a切YVO_4作为拉曼晶体,采用声光调Q,获得了高效的1 176 nm拉曼激光输出。当脉冲重复率为10 k Hz、15 k Hz和20 k Hz时,测量了拉曼光输出功率和脉冲宽度随抽运功率的变化。在11...以半导体侧面泵浦Nd:YAG作为1 064 nm基频激光源,长度40 mm的a切YVO_4作为拉曼晶体,采用声光调Q,获得了高效的1 176 nm拉曼激光输出。当脉冲重复率为10 k Hz、15 k Hz和20 k Hz时,测量了拉曼光输出功率和脉冲宽度随抽运功率的变化。在117.7W的输入泵浦功率和15 k Hz的脉冲重复率下,获得了6.98 W的1 176 nm激光输出,而从LD到拉曼光的光-光转换效率为5.93%。展开更多
A diode pumped intracavity frequency-doubled Nd: YVO<sub>4</sub> laser emitting at 671 nm with a type- Ⅱ noncritical phase-matched LBO crystal is reported. A maximum output power at 671 nm of 404 mW was o...A diode pumped intracavity frequency-doubled Nd: YVO<sub>4</sub> laser emitting at 671 nm with a type- Ⅱ noncritical phase-matched LBO crystal is reported. A maximum output power at 671 nm of 404 mW was obtained under an incident pump power of 5.16 W, with an optical-to-optical conversion efficiency up to 7.8%. The output power fluctuates less than 5% while the temperature change of the LBO crystal is maintained at ± 0.5℃ at the phase-matched temperature.展开更多
基金National Natural Science Foundation of China(10979029,51172111,11204148)National Engineering Research Center for Optoelectronic Crystalline Materials(2007K08)
基金Project supported by the State Key Laboratory of Tribology,Tsinghua University,China (Grant No.SKLT08A05)
文摘A laser diode end-pumped passively mode-locked Nd：YVO4 solid-state laser with a semiconductor saturable ab- sorber mirror （SESAM）, in which the intracavity laser beam spot on the SESAM can be adjusted periodically, is investigated. Inserting a rectangular prism （RP） into the laser cavity is a promising approach towards the goal of periodically moving the position of the focus spot of the intracavity pulse on the SESAM surface to avoid the long-time irradiation of the laser beam on the same position, thereby solving a series of problems caused by damage to the SESAM and greatly prolonging its usage life. The adjustment of the rectangular prism in the laser cavity does not break the stable continuous wave （CW） mode-locked condition. The laser generates a stable picosecond pulse sequence at 1064 nm with an output power of 3.6 W and a pulse width of 14 ps. The instabilities of the output power and the pulse width are 1.77% and 4.5%, respectively.
文摘报道了一种结构简单紧凑的输出波长为1487 nm的三阶斯托克斯调Q锁模(Simultaneously Q-switched and mode-locked(QML))自拉曼固体激光器。采用光纤耦合输出的大功率半导体激光器单端泵浦掺Nd原子浓度为0.3 at.%的Nd∶YVO4复合晶体,在重复频率(pulse repetition rate(PRF))为25 k Hz,泵浦功率为24 W时,输出的波长为1487 nm,获得的最大平均输出功率为588 m W,锁模脉宽为21.09 ps,单脉冲能量为8.23μJ,峰值功率达到390 k W。
文摘以半导体侧面泵浦Nd:YAG作为1 064 nm基频激光源,长度40 mm的a切YVO_4作为拉曼晶体,采用声光调Q,获得了高效的1 176 nm拉曼激光输出。当脉冲重复率为10 k Hz、15 k Hz和20 k Hz时,测量了拉曼光输出功率和脉冲宽度随抽运功率的变化。在117.7W的输入泵浦功率和15 k Hz的脉冲重复率下,获得了6.98 W的1 176 nm激光输出,而从LD到拉曼光的光-光转换效率为5.93%。
文摘A diode pumped intracavity frequency-doubled Nd: YVO<sub>4</sub> laser emitting at 671 nm with a type- Ⅱ noncritical phase-matched LBO crystal is reported. A maximum output power at 671 nm of 404 mW was obtained under an incident pump power of 5.16 W, with an optical-to-optical conversion efficiency up to 7.8%. The output power fluctuates less than 5% while the temperature change of the LBO crystal is maintained at ± 0.5℃ at the phase-matched temperature.
