Gain competition in dual wavelength quantum cascade lasers.
نویسندگان
چکیده
We investigated dual wavelength mid-infrared quantum cascade lasers based on heterogeneous cascades. We found that due to gain competition laser action tends to start in higher order lateral modes. The mid-infrared mode with the lower threshold current reduces population inversion for the second laser with the higher threshold current due to stimulated emission. We developed a rate equation model to quantitatively describe mode interactions due to mutual gain depletion.
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ورودعنوان ژورنال:
- Optics express
دوره 18 10 شماره
صفحات -
تاریخ انتشار 2010