查询词典 photoelectric threshold

Research on laser damage threshold of photoelectric detector.

激光对光电探测器的损伤阈值研究。

For the low linear saturation threshold of photoelectric detector,a new and reliable method used in diagnostic system is introduced to attenuate high energy laser power density using multilayer dielectric coating.

针对环形光刀取样式高能激光束在线测量系统应用中光电探测器线性饱和功率密度低而被测高能激光功率密度高的特点，采用对取样激光扩束和介质膜衰减片级联衰减的方式，实现了数千倍的线性光强衰减。

The theory of optically activated charge domain is adopted to analyze both the output characteristics and the photoelectric threshold condition of the semi-insulating GaAs photoconductive switch under the non-linear operational mode.

用光激发电荷畴理论分析了半绝缘GaAs光电导开关在非线性工作模式下的输出特性和光电阈值条件。

Femtosecond pulsed laser ; pump-probe ; silicon ; silicon photoelectric detector; damage threshold

飞秒激光；泵浦-探针；硅；硅光电探测器；失效阈值

Based on the conclusion of experimental law, the photoelectric threshold condition is obtained for the semi-insulating GaAs photoconductive switch under the non-linear mode, pointing it out that, when the optic-energy triggers off the switch to meet the prerequisite that n_0L is greater than or equal to 10~(12)cm~(-2), the necessary condition is achieved for high field domain and meanwhile the threshold electric field serves to produce charge transmission effect within the material.

在总结实验规律的基础上，得到半绝缘GaAs光电导开关非线性模式的光电阈值条件，指出当光能触发使开关满足n0L≥10~(12)cm~(-2)时，达到形成高场畴的必要条件，阈值电场的作用是使材料体内产生电子转移效应。

A two-channel associative system using a CCD camera, an image card, a computer and a liquid crystal light valve as the controlling and input devices, and liquid crystal photoelectric switches as the threshold devices, is proposed.

首次将多通道并行处理的概念引入联想存储系统中，提出一个带有CCD摄像机、图像卡、微机及液晶光阀等控制与输入设备，并以液晶电光开关作为取阈反馈装置的双通道联想系统。

The invention discloses a passive optical network signal monitoring method comprising the following steps: obtaining a PON signal from one side of an optical line terminal and an optical network unit, detecting the photoelectric property parameter of the obtained PON signal and judging whether the detected photoelectric property parameter lower than a predeterminate photoelectric property parameter threshold or not, if it is, a corresponding alarming signal is transmitted to the OLT.

本发明公开了一种无源光网络信号监控方法，包括以下步骤：获取来自光线路终端和光网络单元中一侧的PON信号，检测所获取的PON信号的光电性能参数；和判断所检测出的光电性能参数是否低于预设的光电性能参数阈值，如果是，则发送对应设置的告警信号给所述OLT。

Meantime, the transparent ZnO electrode reduced the spatial separation between the liquid and the underlying electrode, and effectively photoelectric cooperative wetting occurred, with the surface changing from low adhesive to adhesive, which is propitious to develop in this field, such as the feasibility of the patterned photoelectric cooperative wetting, namely, applying a bias lower than the electrowetting threshold voltage, photoelectric cooperative wetting can be realized only at the illumination site, i.e., patterned site.

这一研究有利于拓展这一领域的发展，为开发新型的协同响应的功能浸润性界面材料提供新的思路。同时，浸润性从超疏水到亲水转变过程中，表面从低粘滞状态变为粘滞状态。这一过程为实现光电协同控制的图案化浸润提供了可能性，即在低于电浸润阈值电压的条件下，通过图案化的光照来实现液体图案化浸润。

Patterned wettability transition by photoelectric cooperative and anisotropic wetting was demonstrated on this surface, namely, applying a bias lower than the electrowetting threshold voltage, photoelectric cooperative wetting can be realized only at the illumination site, i.e., patterned site.

在这种薄膜表面，实现了一种通过光电协同控制的各向异性浸润作用来获得液体的图案化浸润的方法，即在低于电浸润阈值电压的条件下，通过图案化的光照来实现液体图案化浸润。超疏水复合氧化锌纳米棒阵列为图案化浸润提供了必要的各向异性浸润环境。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。