The principle to obtain low noise laser output is analyzed and a new laser structure and a precise temperature controller are designed to meet the requirement of DVD mastering system.
针对DVD母盘系统对激光的特殊要求，分析了低噪声激光输出的实现原理，设计了合理的激光结构和精确的温度控制系统，以保障低噪声高稳定的蓝色激光输出。
"This random jitter would cause noise in the laser light signal," says Hogan.
“这种随机抖动将导致激光信号的噪音。”霍根说。
It is proved theoretically and experimentally that this method makes an order of magnitude improvement in reducing the laser noise for the optical stabilizer.
理论分析和实验都表明，采用该方法可使光强稳定系统压缩噪音的能力有数量级的提高。
This article briefly describes the thoughts, key points and test result of a low noise pulse amplifier used in Laser Isotope Mass Spectrometer.
本文简要介绍了用于激光共振电离质谱实验的低噪声脉冲放大器的设计思路、实现的要点及其测试结果。
In experiment, we research the optical spectrum and analyze the influence of driven current noise on optical spectrum linewidth of tunable DBR laser.
实验研究了可调dBR激光器的光谱特性，并分析了驱动电流噪音对可调d BR激光器线宽的影响。
Steering exposure time of a camera through control electron shutter with laser echo pulse is an effective method for inhibiting background noise.
用激光回波脉冲控制电子快门来操纵摄像机的曝光时间，是抑制背景噪声的一种有效方法。
A new principle and a new method for suppressing laser noise first discovered are described.
叙述了首次发现的抑制激光噪声的一种新原理和新方法。
Experimental results indicate this algorithm is a fast efficient algorithm to filter speckle noise in the underwater laser image.
实验表明这是一种有效的滤除水下激光图像散斑噪声的快速滤波算法。
The noise of an optical receiver consisting of a surface emitting laser amplifier and a detector is enhanced by any lack of gain uniformity.
由表面发射激光放大器和检测器组成的光接收器的噪声因任何增益的非均匀性而增加。
Relative intensity Noise (RIN) has been adopted to study the intensity distributions of laser beams propagating in the muti-stacked medium in frequency domain.
采用了相对强度噪声(RIN)的分析方法，对高功率激光光束在多级介质中传输的光强分布情况在频域内进行了定量的分析。
A single_mode laser cubic model driven with quadratic pump noise is proposed.
合理地引入了平方泵噪声到单模激光的立方模型中。
The laser vibrometer based on the surface vibration for measuring and analyzing the radiating noise of the 4120SG diesel engine is proposed.
以4120SG柴油机为研究对象，提出基于激光测振的表面振动法测量柴油机辐射噪声。
To recognize underwater target, extraction must be performed well because there is a lot of speckle noise in underwater laser images.
由于激光照射下的水下图像含有大量的散斑噪声，严重影响图像的质量。
Based on analyzing common low noise and fast photodetectors, PIN photodiode is selected to detect He-Ne laser longitudinal mode pulse.
在分析常用低噪声快速光电探测器的基础上，选择pin光电二极管来探测氦氖激光纵模脉冲。
The intensity noise of a free-running diode laser was investigated experimentally.
在实验上研究了自由运转模式下半导体激光器的强度噪声。
Based on the input and output signal model of a dithered ring laser gyroscope, a new method of dither signal remover utilizing adaptive noise canceling is disclosed.
根据抖动偏频激光陀螺的输入、输出信号模型，提出利用自适应噪声对消技术消除陀螺抖动信号。
On the basis of considering the modules of laser radar equation, SNR and AGC, imaging demand, noise and imaging proces, we make a simulation of pulsed coherent imaging laser radar for moving target.
针对运动目标，在考虑激光雷达方程、信噪比和自动增益、成像指标、噪声、图像处理等模块的基础上，对脉冲相干成像激光雷达进行了运动目标的成像模拟。
The LSPM has been found to be intrinsically different from the laser noise caused by the moving striation.
实验发现，激光自脉冲调制与行走辉纹产生的激光噪音有本质区别。
This paper deals with the effect of FM quantum noise of laser sources on the receiver performance in coherent fiber-optic communication systems.
本文分析了激光源FM量子噪声对数字光纤相干通信接收机性能的影响。
Phase noise in semiconductor laser due to external optical feedback is investigated theoretically.
本文在理论上研究了由于外部光反馈引起的半导体激光器的相位噪声。
The multiplicative noise and saturation effect in a single-mode laser are investigated and the mean and normalized variance of the steady state laser intensity are calculated.
研究了单模激光中的倍增噪声和饱和效应，导出了定态激光强度的平均值和归一化方差。
Aiming at the welding image produced by laser structure light under robotic welding, it introduces a noise filter method based on Mathematical Morphology.
针对机器人焊接中的激光结构光焊缝图像，提出了数学形态学滤波去噪方法。
The results indicate that the cross-correlations between the real and imaginary parts of quantum noise increases the laser intensity fluctuations.
结果表明：量子噪声实、虚部互关联会增大激光强度的涨落。
The principle of laser cavitation noise was also Elaborated and the efficiency of the transformation from laser to noise.
阐述了激光空泡噪声的原理，分析了激光产生噪声的转换效率。
The effect of the additive coloured noise on mode-competition of a two-mode laser is studied.
研究了加法色噪声对双模激光竞争效应的影响。
The FM noise and AM noise of a negative frequency feedback (NFFB) semiconductor laser(LD)are presented.
本文用半经典理论研究了负频反馈（NFFB）半导体激光器的FM和AM噪声。
To recognize underwater target, segmentation must be performed efficiently because there is a lot of speckle noise in laser underwater images.
水下激光图像中夹杂着严重的散斑噪声，受其影响，要识别水下激光目标，就要对图像进行有效的消噪，然后进行目标分割。
The FM noise and AM noise of a negative frequency feedback (NFFB) semiconductor laser(LD)are presented. The FM noise (linewidth)can be reduced greatly by NFFB technique under proper conditions.
本文用半经典理论研究了负频反馈（NFFB）半导体激光器的FM和AM噪声。在适当的条件下，FM噪声（线宽）可用NFFB技术得到极大的抑制。
The phase noise of Raman laser is analyzed, and the influence of phase noise for measurement sensitivity is investigated in this thesis, which is helpful to the design of experimental system.
本论文主要对于拉曼激光的相位噪声进行分析与研究，考虑拉曼激光的相位噪声对于原子干涉仪精度的影响，为具体的实验提供参考意见。
The paper analyses the energy and signal noise ratio (SNR) with grating to measure passive laser wavelength in real time, provides the theoretical basis for measurement and error from the method.
从理论上分析了利用光栅实时测量被动入射激光波长的能量分布及信噪比，给出了计算公式及误差分析。
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