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A diode-pumped picosecond laser was demonstrated with Yb 3+ -doped yttrium lanthanum oxide transparent laser ceramic Yb:(Y 1-x La x ) 2 O 3 ( x = 0.1), which was fabricated with nanopowders and sintered in H 2 atmosphere. Passive mode-locking was realized for the first time to our knowledge with a semiconductor saturable absorber mirror, generating pulses of 174 ps at the central wavelength 1032.5 nm with the average output power 162 mW under a diode-laser pump power of 3.2 W.
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Li et al. (2009) studied this question.
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