13 March 2015 29.5W continuous wave output from 100um wide laser diode
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Abstract
We report modeling and experimental results that demonstrate mechanisms limiting the output power of semiconductor lasers and a method experimentally yielding a dramatic increase of the maximum continuous wave output power. Unfolded cavity is used to achieve higher power and efficiency by improving the alignment between the carrier and photon density profiles in a long cavity device. This method offers reduced longitudinal spatial hole burning (LSHB) and lower photon density inside the laser cavity; therefore, it decreases possible LSHB and non-linear effects that could limit the output power of a semiconductor laser. We have demonstrated 29.5W output from 5.7mm long and 100um wide waveguide at 9xx nm using an unfolded cavity. A semiconductor laser with an unfolded cavity allows scaling of the output power by increasing the cavity length.
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Abdullah Demir, Abdullah Demir, Matthew Peters, Matthew Peters, Richard Duesterberg, Richard Duesterberg, Victor Rossin, Victor Rossin, Erik Zucker, Erik Zucker, } "29.5W continuous wave output from 100um wide laser diode", Proc. SPIE 9348, High-Power Diode Laser Technology and Applications XIII, 93480G (13 March 2015); doi: 10.1117/12.2077342; https://doi.org/10.1117/12.2077342
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