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    • 65. 发明申请
    • PULSED FIBER LASER WITH DOUBLE- PASS PUMPING
    • 脉冲激光与双重抽吸
    • WO2013098620A1
    • 2013-07-04
    • PCT/IB2012/002748
    • 2012-12-19
    • DATALOGIC AUTOMATION S.R.L.
    • TAGLIAFERRI, MarcoCANNONE, FabioNOLLI, Daniela
    • H01S3/067H01S3/117H01S3/102H01S3/094H01S3/113H01S3/16
    • H01S3/0675H01S3/094007H01S3/094015H01S3/094076H01S3/094084H01S3/09415H01S3/1024H01S3/113H01S3/117H01S3/1618
    • A pulsed fiber laser oscillator comprising in succession: a pumping source (10) for providing pumping energy at a first wavelength to a multimode optical fiber; a first Bragg grating optical filter (11 ) reflecting a second wavelength and transparent to said first wavelength; an active optical fiber (20) having a predefined wavelength which emits radiation at said second wavelength; a switch (14) arranged to periodically interrupt said second wavelength to provide a pulsed laser beam; and a second Bragg grating optical filter (15) partially reflecting said second wavelength; characterized by comprising, following said active optical fiber (20), a reflector (21 ) of said first wavelength, such that said pumping energy undergoes two passages within said active optical fiber (20); said predefined wavelength being determined such that the absorption of said pumping energy at said first wavelength within said active optical fiber (20) is greater than 80% after undergoing said two passages.
    • 一种脉冲光纤激光振荡器,包括:泵送源(10),用于将第一波长的泵浦能量提供给多模光纤; 反射第二波长并对所述第一波长透明的第一布拉格光栅滤光器(11); 具有预定波长的有源光纤(20),其发射所述第二波长的辐射; 布置成周期性地中断所述第二波长以提供脉冲激光束的开关(14); 和部分地反射所述第二波长的第二布拉格光栅滤光器(15); 其特征在于,在所述有源光纤(20)之后包括所述第一波长的反射器(21),使得所述泵浦能量在所述有源光纤(20)内经过两个通道; 所述预定波长被确定为使得在进行所述两个通道之后,在所述有源光纤(20)内的所述第一波长处的所述泵浦能量的吸收大于80%。
    • 66. 发明申请
    • STABLE THERMAL LENS IN A Q- SWITCHED SOLID-STATE LASER BY PUMP LIGHT CONTROL
    • 通过泵浦灯控制在Q-切换的固态激光器中的稳定的热透镜
    • WO2013079943A1
    • 2013-06-06
    • PCT/GB2012/052946
    • 2012-11-29
    • THALES HOLDINGS UK PLC
    • LEE, StephenALEXANDER, WilliamCOOK, Trevor
    • H01S3/102H01S3/08H01S3/06H01S3/094H01S3/0941
    • H01S3/08072H01S3/061H01S3/094076H01S3/09408H01S3/0941H01S3/1022H01S3/113
    • The invention relates to a pulsed laser apparatus comprising a rod- type solid-state gain medium (15) and at least one energy source for providing energy to the gain medium, wherein the apparatus is configured to selectively provide thermal compensation energy from the energy source to the gain medium when the thermal load of the gain medium and/or a pulse rate of the apparatus is below an optimum value. A transverse pumping scheme may be used with laser diode (35) pumping and being controlled by a pump diode driver (40). The resonator comprises further a HR mirror (30) and an output coupler (20) and a passive Q-switch (25). The curvature of the output coupler is chosen to realize a stable resonator for the gain medium (15) having a constant thermal lens. Between the pump pulses (60) resulting in lasing, additional pump pulses (70a-e) are provided with the laser being below threshold but keeping the thermal lens inside the gain medium constant.
    • 本发明涉及一种包括棒状固态增益介质(15)和用于向增益介质提供能量的至少一个能量源的脉冲激光装置,其中该装置构造成从能量源选择性地提供热补偿能量 当增益介质的热负荷和/或设备的脉冲速率低于最佳值时,到增益介质。 可以使用激光二极管(35)泵浦并由泵浦二极管驱动器(40)控制的横向泵浦方案。 谐振器还包括HR镜(30)和输出耦合器(20)和无源Q开关(25)。 选择输出耦合器的曲率以实现具有恒定热透镜的增益介质(15)的稳定谐振器。 在导致激光的泵浦脉冲(60)之间,提供附加的泵浦脉冲(70a-e),其中激光低于阈值,但将热透镜保持在增益介质内部恒定。