Abstract
The development of high power and reliable lasers producing ultrashort pulses in the 1.5-1.6μm wavelength region is of considerable interest for a wide range of research and industrial applications. Specifically, such lasers can be used as pulse generators for high bit rate next-generation optical networks. Er3+ laser materials co-doped with Yb3+ are attractive gain media for tunable 1.5-1.6μm lasers that can be pumped efficiently around 980mn. To date, ultrashort pulse generation has been demonstrated from Er,Yb: glass lasers with average powers of just a few tens of milliwatts [1]. Here we report, for the first time to our knowledge, a passively mode-locked Er3+,Yb3+:YAl3(BO3)4 (Er,Yb:YAB) [2] laser that generates 3.8ps-pulses at 1530nm with an average power up to 270mW. We believe that this is the first passively mode-locked Er/Yb co-doped laser based on a crystalline gain medium.
© 2007 IEEE
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