High-brightness 9XXnm pumps with wavelength stabilization

Further acceptance and fiber lasers and direct diode systems commercial success greatly depend on diodes' availability and cost ($/W). These two parameters should not compromise pumps' performance and reliability. We report on two high-brightness CW devices: high-power module launching over 100W and a pump capable of launching 50W of wavelength-stabilized emission. Devices are based on a single emitter platform and utilize a 105 μm core diameter fiber; radiation is confined within NA<0.13 in both designs. These hermetically sealed modules require passive cooling and are designed to operate with ≤ 30°C diodes' junction overheat. CW peak power efficiency is higher than 55% for both devices. The 25-30dB isolation option (feedback protection at 10XX-nm) is optional in either package. Modules have the industry's smallest footprint and are perfectly suited to serve pumping fiber lasers and direct materials processing markets.