Michaille Laurent, Taylor David M, Bennett Charlotte R, Shepherd Terence J, Ward Benjamin G
QinetiQ, St. Andrews Road, Great Malvern, WR14 3PS, England.
Opt Lett. 2008 Jan 1;33(1):71-3. doi: 10.1364/ol.33.000071.
We model and characterize the behavior of a Q-switched fiber laser. The fiber is a doped multicore photonic crystal fiber having six cores in a ring-type geometry. The fiber laser is Q-switched using an intracavity acousto-optic modulator. Using a mode filtering technique in the far field, a mode very close to the fundamental in-phase supermode is obtained with a mode field area of 4200 microm(2) and a divergence of 9 mrad. Pulses with energies of up to 2.2 mJ and durations of 26 ns (limited by end facet damage) at a repetition rate of 10 kHz are obtained.
我们对调Q光纤激光器的行为进行了建模和表征。该光纤是一种掺杂的多芯光子晶体光纤，具有环形几何结构的六个芯。该光纤激光器使用腔内声光调制器进行调Q。利用远场中的模式滤波技术，获得了一个非常接近基模同相超模的模式，其模场面积为4200微米²，发散角为9毫弧度。在10千赫的重复频率下，获得了能量高达2.2毫焦、持续时间为26纳秒（受端面损伤限制）的脉冲。
