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Optimizing polarization states in a figure-8 laser using a nonreciprocal phase shifter

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3 Author(s)
Hong Lin ; Hewlett-Packard Labs., Palo Alto, CA, USA ; D. K. Donald ; W. V. Sorin

The polarization states in a figure and laser are analyzed using Jones matrices. The analysis shows that a figure-8 laser in CW operation does not give enough information to allow the optimization of the birefringence for mode-locking. A switchable nonreciprocal phase shifter is proposed to provide a simple way to optimize the birefringence for a mode-locked figure-8 laser. Using this device, the mode-locking of a diode-pumped figure-8 laser was started, with a probability better than 99%, by following a sequence of predetermined mechanical adjustment. With the proposed nonreciprocal phase shifter, the optimization and starting of a figure-8 laser can easily be automated

Published in:

Journal of Lightwave Technology  (Volume:12 ,  Issue: 7 )