کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1537993 996600 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Intensity dynamics in a waveguide array laser
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Intensity dynamics in a waveguide array laser
چکیده انگلیسی

We consider experimentally and theoretically the optical field dynamics of a five-emitter laser array subject to a ramped injection current. We have achieved experimentally an array that produces a robust oscillatory power output with a nearly constant π phase shift between the oscillations from each waveguide. The output power also decreases linearly as a function of waveguide number. Those behaviors persisted for pump currents varying between 380 and 500 mA with only a slight change in phase. Of note is the fact that the fundamental frequency of oscillation increases with injection current, and higher harmonics are produced above a threshold current of approximately 380 mA. Experimental observations and theoretical predictions are in agreement. A low dimensional model was also developed and the impact of the nonuniform injection current studied. A nonuniform injection current is capable of shifting the bifurcations of the waveguide array providing a valuable method of array tuning without additional gain or structural alterations to the array.

Research Highlights
► Five-emitter array fabricated with a sloped injection current.
► Array produces oscillatory power output between 380 and 500 mA.
► Frequency of power oscillation is directly related to injection current.
► Good agreement between experiment and the theoretical model.
► Injection current slope alters the gain at where the array loses stability.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 284, Issue 4, 15 February 2011, Pages 971–978
نویسندگان
, , , , , ,