针对局域网常见的一些故障问题,进行了详细分析及处理方法。本文介绍局域网常见的故障及处理方法。VLAN故障以太网是一种基于CSMA/CD(Carrier Sense Multiple Access/cOLLISION Detection)的共享通讯介质的数据网络通讯技术,当主机数目...针对局域网常见的一些故障问题,进行了详细分析及处理方法。本文介绍局域网常见的故障及处理方法。VLAN故障以太网是一种基于CSMA/CD(Carrier Sense Multiple Access/cOLLISION Detection)的共享通讯介质的数据网络通讯技术,当主机数目较多时,会导致冲突严重、广播泛滥、性能显著下降甚至造成网络不可用等问题。展开更多
Stable 68 fs pulses with the average power of 1.5 W is directly generated from a multimode diode-pumped Kerr-lens mode-locked Yb:CYA laser by separating the gain medium and Kerr medium. The repetition rate is about 50...Stable 68 fs pulses with the average power of 1.5 W is directly generated from a multimode diode-pumped Kerr-lens mode-locked Yb:CYA laser by separating the gain medium and Kerr medium. The repetition rate is about 50 MHz, resulting in a single pulse energy of 30 n J and a peak power of 0.44 MW. To the best of our knowledge, this is the highest single pulse energy ever produced from a mode-locked Yb:CYA oscillator. Our experimental results show that Yb:CYA crystal is an excellent candidate for multiwatt, sub-100 fs pulse generation in diode-pumped all-solid-state lasers. It is believed that the output power can be scalable to multi-W while the pulse duration is maintained with this simple method.展开更多
文摘针对局域网常见的一些故障问题,进行了详细分析及处理方法。本文介绍局域网常见的故障及处理方法。VLAN故障以太网是一种基于CSMA/CD(Carrier Sense Multiple Access/cOLLISION Detection)的共享通讯介质的数据网络通讯技术,当主机数目较多时,会导致冲突严重、广播泛滥、性能显著下降甚至造成网络不可用等问题。
基金National Key Basic Research Program of China(2013CB922402)National Natural Science Foundation of China(NSFC)(61705174,11774277)+2 种基金Fundamental Research Funds for the Central Universities(JBX170511)Open Fund of IPOC(BUPT)(IPOC2016B009)111 Project(B17035)
文摘Stable 68 fs pulses with the average power of 1.5 W is directly generated from a multimode diode-pumped Kerr-lens mode-locked Yb:CYA laser by separating the gain medium and Kerr medium. The repetition rate is about 50 MHz, resulting in a single pulse energy of 30 n J and a peak power of 0.44 MW. To the best of our knowledge, this is the highest single pulse energy ever produced from a mode-locked Yb:CYA oscillator. Our experimental results show that Yb:CYA crystal is an excellent candidate for multiwatt, sub-100 fs pulse generation in diode-pumped all-solid-state lasers. It is believed that the output power can be scalable to multi-W while the pulse duration is maintained with this simple method.
