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We report on the realization of narrow linewidth high power DFB diode lasers emitting near 1064 nm in stable longitudinal and lateral single mode. The linewidth is analyzed in dependence of the output power for lasers with cavity lengths of 1 and 2 mm by means of a heterodyne beat note technique. The minimum intrinsic linewidth is 22 kHz FWHM (full width at half maximum, at 100 μ s time scale) for...
We report on the realization of narrow linewidth high power distributed bragg reflector (DBR) lasers. For devices with a front facet reflectivity Rf = 30% we obtain a minmum intrinsic linewidth of 12 kHz and a total linewidth of 147 kHz at an output power of 130mW (measurement time = 100 µs). For Rf = 1% we report an an intrinsic linewidth of less than 100 kHz and a total linewidth of 1202 kHz at...
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