Entity

Time filter

Source Type


Zhao T.,CAS Academy of Opto Electronics | Fan Z.,CAS Academy of Opto Electronics | Fan Z.,Beijing Guoke Laser Technology Co. | Yu J.,CAS Academy of Opto Electronics | And 4 more authors.
Zhongguo Jiguang/Chinese Journal of Lasers | Year: 2010

To measure output parameters of a laser amplifier, with the repetition rate of several tens of minutes one pulse and single pulse energy of 5 J, a special designed measurement system is put forward for high-energy, large cross-section, low frequency laser system. This system uses the principle of Fourier image transfer to realize real-time and clear monitoring to the output characteristics of the laser beam. And this system can not noly detect laser wavelength, spectral width, spot size, single pulse energy, repetition rate, and polarization direction of the laser beam simultaneously, but also statistically calculate the beam modulation, divergence angle, directivity, beam quality factor, energy stability, average power, power stability, pulse width, pulse stability, and degree of polarization. Source


Wang X.,CAS Academy of Opto Electronics | Wang X.,University of Chinese Academy of Sciences | Wang X.,Beijing Guoke Laser Technology Co. | Fan Z.,CAS Academy of Opto Electronics | And 12 more authors.
Zhongguo Jiguang/Chinese Journal of Lasers | Year: 2012

A low-repetition-rate pulsed LD-pumped cavity-dumped solid-state lasers are designed, in order to minimize the influence of losses, two thin film polarizer are used in the cavity, so that the higher reflectivity of vertical vibration of linearly polarized light is retained in the cavity. Based on this device, The influence of the longer fall time of Pockels cell driving power influence on solid-state cavity-dumped lasers has been studied experimentally. The results show that when the fall time of Pockels cell driving power is longer than a round-trip time in the cavity, some significant changes will occur in the output characteristics of the laser, with the increase of current intensity, the pulse width will increase, and the pulse energy increases first and then decreases; with the increase of the gating time of Pockels cell power, some similar changes will occur on the pulse width and the pulse energy. Source

Discover hidden collaborations