Ultra-wide hysteresis frequency bistability in vertical cavity surface emitting lasers subject to orthogonal optical injection

摘要

We report experimental observations of an ultra-wide frequency hysteresis in vertical cavity surface emitting lasers subject to orthogonal optical injection. Polarization bistability and its associated hysteresis are studied by increasing and decreasing the frequency detuning for a fixed injection power when the device operated at high bias current I ＞ 2I_(th). The results show that an ultra-wide hysteresis width of about 155 GHz is obtained for positive frequency detuning. The width of the frequency hysteresis is more than four times larger than all previously reported widths.