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报道了基于888nm半导体抽运Nd∶YVO4晶体连续被动锁模的皮秒振荡器。通过热激发抽运方式改善激光器的热性能,提高锁模振荡器输出的平均功率与单脉冲能量。利用半导体可饱和吸收体(SESAM)实现激光器锁模运转的启动与维持。在抽运功率为60 W时,获得最大输出功率为15W,重复频率为53MHz的皮秒脉冲输出,光-光转换效率为24%。在输出功率为15W时脉冲宽度为45ps。
A picosecond oscillator based on 888nm semiconductor pumped Nd:YVO4 crystal with continuous passive mode-locking was reported. By thermally stimulating the pumping mode to improve the thermal performance of the laser, the output of the mode-locked oscillator to increase the average power and single pulse energy. Using semiconductor saturable absorber (SESAM) to achieve laser mode locking operation of the start and maintain. At the pumping power of 60 W, the picosecond pulse output with maximum output power of 15W and repetition frequency of 53MHz was obtained, and the light-to-light conversion efficiency was 24%. The pulse width is 45ps at 15W output power.