We report a linear-cavity mode-locked Yb-doped fiber laser using self-made semiconductor saturable absorber mirrors (SESAMs). The SESAMs are grown by means of metalorganic chemical vapor deposition, with a design of high modulation depth using strain-compensated multiple quantum wells. We choose two kinds of self-made SESAMs with different periods of top reflector in the linear cavity, and they can both be applied to stable mode-locking operation without damage. The output characteristics of the mode-locked oscillator indicate that SESAMs with high modulation depth are beneficial for mode-locked fiber lasers and the modulation depth can limit the pulse width of the output pulses.

我们报告了使用自制的半导体可饱和吸收镜（SESAMs）的线性腔锁模掺Yb光纤激光器。SESAMs是通过金属有机化学气相沉积法生长的，采用应变补偿的多量子阱设计了高调制深度。我们选择两种自制的SESAM，它们在线性腔中具有不同周期的顶部反射器，它们都可以用于稳定的锁模操作而不会造成损坏。锁模振荡器的输出特性表明，具有高调制深度的SESAM对于锁模光纤激光器是有益的，并且调制深度会限制输出脉冲的脉冲宽度。