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Curved Waveguide Array Diode Lasers for High-Brightness Applications

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5 Author(s)
Elarde, V.C. ; Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL ; Tobin, K.E. ; Price, R.K. ; Verma, V.B.
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We have developed a novel structure for achieving high-brightness output from a semiconductor laser array using coherent spatial beam combination. The structure consists of an array of curved ridge waveguides with in-phase, coherent output. Interference of the multiple outputs leads to a narrow, bright, on-axis, far-field beam shape. Experimental results demonstrate a diffraction limited output beam width, ideal for high-brightness applications.

Published in:

Photonics Technology Letters, IEEE  (Volume:20 ,  Issue: 13 )