No abstract

A laser diode pumped Tm3+-doped ZBLAN fiber upconversion laser is demonstrated with blue output power levels up to 106 mW. Differential optical-to-optical conversion efficiencies up to 30% are measured with respect to pump power coupled into the upconversion fiber. A single spatial mode blue output beam is demonstrated, with an M2 value of 1.4.

No abstract

A modal analysis at threshold is presented for linear Talbot-cavity semiconductor lasers with a finite number of array elements. The analysis self-consistently calculates the array supermode profiles and the loss each incurs owing to imperfect Talbot imaging, including edge diffraction losses. It is found that the decrease in mode discrimination between supermodes incurred by fabricating larger arrays can be offset by reducing the near-field fill factor.

No abstract