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Tapered-cavity surface-emitting distributed-Bragg-reflector semiconductor lasers: modeling and experiment

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6 Author(s)
Luo, H. ; ACTMicroDevices Inc., Radford, VA, USA ; Kasunic, K.J. ; Macomber, S.H. ; Bedford, R.
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We report on the design and fabrication of tapered cavity grating coupled surface-emitting distributed Bragg reflector (DBR) lasers in the 980-nm regime. A curved second-order grating is used at the end of a tapered gain section to provide feedback as well as collimated surface out-coupling. A detailed numerical analysis shows that operation up to approximately twice the threshold is possible without significant degradation of the far field. Near diffraction-limited collimated surface-emitting output with moderate power of about 150 mW is obtained under continuous operation.

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:6 ,  Issue: 4 )