Abstract

We present our work on the coherent combining of an array of diode emitters in a conventional diode bar configuration using the coherent polarization locking technique. An external laser cavity is designed so that the diode emissions from four diode emitters are spatially overlapped and passively phase locked via a series of birefringent walk-off crystals and a polarizing beam splitter. This concept was experimentally demonstrated up to 1030mW of coherently combined power and was shown to increase the laser brightness of the diode bar by approximately 50 times.

© 2009 Optical Society of America

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