Pumped by a 940 nm fiber-coupled diode laser, a passively mode-locked Yb：YAG thin disk oscillator was demonstrated with a semiconductor saturable absorber mirror（SESAM）. 12.1 W mode-locked pulses were obtained with...Pumped by a 940 nm fiber-coupled diode laser, a passively mode-locked Yb：YAG thin disk oscillator was demonstrated with a semiconductor saturable absorber mirror（SESAM）. 12.1 W mode-locked pulses were obtained with pulse duration of 698 fs at the repetition rate of 57.43 MHz. Measurement showed that the beam quality was close to the diffraction limit.展开更多
在CPU和GPU为代表的高速部件的面前,最重要的存储部件硬盘却进展甚微。硬盘的速度远远地落后于其他部件,所以硬盘已经成为整个计算机系统的性能瓶颈。该文提出了一种代价很小,性能和复杂度却得到一定改善的RAID的新思想,即单物理硬盘阵...在CPU和GPU为代表的高速部件的面前,最重要的存储部件硬盘却进展甚微。硬盘的速度远远地落后于其他部件,所以硬盘已经成为整个计算机系统的性能瓶颈。该文提出了一种代价很小,性能和复杂度却得到一定改善的RAID的新思想,即单物理硬盘阵列(single physical hard disk array,SPHDA),这是对传统RAID技术的深入与改进。通过这种技术,可以在成本增加很少甚至不增加的情况下,让计算机的性能瓶颈得以缓解。展开更多
基金Project supported by the National Key Basic Research Program of China(Grant No.2013CB922402)the National Major Instrument Program of China(Grant No.2012YQ120047)the National Natural Science Foundation of China(Grant No.61210017)
文摘Pumped by a 940 nm fiber-coupled diode laser, a passively mode-locked Yb：YAG thin disk oscillator was demonstrated with a semiconductor saturable absorber mirror（SESAM）. 12.1 W mode-locked pulses were obtained with pulse duration of 698 fs at the repetition rate of 57.43 MHz. Measurement showed that the beam quality was close to the diffraction limit.
文摘在CPU和GPU为代表的高速部件的面前,最重要的存储部件硬盘却进展甚微。硬盘的速度远远地落后于其他部件,所以硬盘已经成为整个计算机系统的性能瓶颈。该文提出了一种代价很小,性能和复杂度却得到一定改善的RAID的新思想,即单物理硬盘阵列(single physical hard disk array,SPHDA),这是对传统RAID技术的深入与改进。通过这种技术,可以在成本增加很少甚至不增加的情况下,让计算机的性能瓶颈得以缓解。
