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光纤激光器
相关语句
  fiber laser
    A micro-vibration signal fidelity-pickup interferometer based on optical fiber laser
    基于光纤激光器的微振动信号保真拾取干涉仪
短句来源
  optical fiber laser
    A micro-vibration signal fidelity-pickup interferometer based on optical fiber laser
    基于光纤激光器的微振动信号保真拾取干涉仪
短句来源
  相似匹配句对
    EXPERIMENTAL RESEARCH ON Er ̄(3+)-DOPED FIBER IR LASER
    掺铒光纤红外激光器的实验研究
短句来源
    A micro-vibration signal fidelity-pickup interferometer based on optical fiber laser
    基于光纤激光器的微振动信号保真拾取干涉仪
短句来源
    A Brief Introduction of Fiber Spectrometer
    光纤光谱仪简介
短句来源
    Laser in biomedicine
    生物医学中的激光器
短句来源
    Microminiature Fiber Optic Spectroscopy
    微小型光纤光谱仪
短句来源
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  fiber laser
The main technology for high power fiber lasers, including laser diode beam shaping, fiber laser pumping techniques, and amplification systems, are discussed in detail.
      
The fiber Bragg grating developed has been applied for tuning the radiation wavelength of an ytterbium fiber laser.
      
Optical multiplexing of microcavity sensors based on a fiber laser
      
The domain of excitation of self-oscillations is experimentally studied in a system consisting of an erbium fiber laser and a microcavity.
      
The effect of passive Q-switching observed in an erbium-doped fiber laser at a low pumping power
      
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Staring from the ABCD law of paraxial beam and the definition of mixing mode coefficient M (or M2) and with taking no account of the quadrantal deviation, the changes through a lens of position of beam’s waist, waist width and angle of divergence were studied for the mixed mode beam (Gaussian-Like beam) outputted from high power LD, then a straightforward method to design the collimating-focusing fiber coupling system by two lens was presented by employing the optimum design tools of MATLAB. Finally, a design...

Staring from the ABCD law of paraxial beam and the definition of mixing mode coefficient M (or M2) and with taking no account of the quadrantal deviation, the changes through a lens of position of beam’s waist, waist width and angle of divergence were studied for the mixed mode beam (Gaussian-Like beam) outputted from high power LD, then a straightforward method to design the collimating-focusing fiber coupling system by two lens was presented by employing the optimum design tools of MATLAB. Finally, a design instance of coupling system used in photonic crystal fiber lasers was given.

在不考虑像差的情况下,采用傍轴光线传输ABCD定律,结合混合模系数M(或M2)的定义,研究了大功率LD尾纤输出的混合模类高斯光束经透镜之后束腰及束腰位置和发散角的变化,并在此基础上,利用MATLAB软件中的优化设计工具,提出一种设计大功率激光光纤准直———聚焦双透镜耦合系统的简单方法,最后给出了一个光子晶体光纤激光器透镜耦合系统设计实例.

To measure micro-vibration signal with amplitude less than 1μm, a real-time, high accuracydetector based on traditional Machelson interferometer was proposed. A narrow-line width fiber laserwas introduced to reduce phase noise under the condition of long optical path difference, and phase shiftcaused by environment can be suppressed with homodyne demodulation scheme. Intensity noise can bedecreased by 16dB using balanced detection. When detected space is 10m away, phase noise caused bylaser is only 5.28×10-...

To measure micro-vibration signal with amplitude less than 1μm, a real-time, high accuracydetector based on traditional Machelson interferometer was proposed. A narrow-line width fiber laserwas introduced to reduce phase noise under the condition of long optical path difference, and phase shiftcaused by environment can be suppressed with homodyne demodulation scheme. Intensity noise can bedecreased by 16dB using balanced detection. When detected space is 10m away, phase noise caused bylaser is only 5.28×10- rad/Hz1/2. Because of the circuit limit, detector sensitivity is only 10- rad/Hz1/2. 6 5When detected signal ranges from 100Hz to 4KHz, the system has good linear response.

为了测量振幅小于1μm的微振动信号,在传统迈克尔逊干涉仪的基础上,提出了一种大光程差情况下的实时高精度测量系统。该系统使用单频窄线宽光纤激光器来减小长光程差下的相位噪声影响;用零差解调方法来抑制环境影响导致的相位漂移;双路平衡检测的使用将光源强度噪声降低16dB左右。当测量距离为10m时,光源引起的相位噪声仅为5.28×10-rad/Hz1/2;但由于6电路处理上的限制,实际可探测的最小灵敏度约为10-rad/Hz1/2。当被测信号在100Hz~4kHz之间5时,系统具有良好的线性响应度。

A novel interferometer, which directs to measure and pick up micro-vibration signal free of distortion, is proposed. The system is based on Michelson interferometer. It uses a fiber laser with narrow linewidth as light source, and adopts homodyne demodulation with phase generated carrier scheme to restore signal. The frequency response range is effectively widened through optimizing the driving circuit of PZT, which is used as phase modulator. And the signal to noise ratio (SNR) is increased with a phase shifter...

A novel interferometer, which directs to measure and pick up micro-vibration signal free of distortion, is proposed. The system is based on Michelson interferometer. It uses a fiber laser with narrow linewidth as light source, and adopts homodyne demodulation with phase generated carrier scheme to restore signal. The frequency response range is effectively widened through optimizing the driving circuit of PZT, which is used as phase modulator. And the signal to noise ratio (SNR) is increased with a phase shifter introduced. The system has a good linearity in the frequency range from 50 Hz to 4 kHz. The SNR and harmonic suppression ratio of output signal is 60 dB and 50 dB respectively. The sensitivity of the system is 1×10-5 rad/Hz1/2.

提出了一种新型的远距离微振动信号的测量和保真拾取系统。该系统基于迈克尔逊干涉仪结构,以窄线宽光纤激光器为光源,采用相位载波零差解调方案实现信号的还原。通过优化压电陶瓷堆(PZT)相位调制器驱动电路,有效地提升了系统的频率响应范围。通过引入移相电路提高了系统的信噪比。系统在50 Hz-4 kHz频率范围内线性度良好,输出信号的信噪比为60 dB,谐波抑制比为50 dB,系统的灵敏度为1×10-5rad/Hz1/2。

 
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