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1060 nm emitting broad-waveguide-type aluminium-free diode lasers have been optimised for maximum power conversion efficiency (PCE). PCE at 67% is achieved at continuous-wave operation and 25degC heatsink temperature from a 1 mm cavity length, 100 mum stripe diode laser. The improvement is mainly the result of an increase in injection efficiency via optimisation of the bandgap structure, and reductions...
Wavelength stabilised 808 nm broad area distributed feedback (DFB) diode lasers with high continuous-wave (CW) output have been realised. The centre wavelength was locked at the Bragg condition with narrow spectral widths of 0.3 nm FWHM and shifted at a rate of 0.062 nm/degC. The 2 mm long laser showed a record high 57 wall-plug efficiency and more than 4W CW output power at 25 C heatsink temperature...
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