We present kW QCW vertical and horizontal arrays composed of 200W bars (peak power) at 8xxnm wavelength. We
also present an unique Bar-on-Submount design using the electrically insulating submounts, which can provide a
platform for simple and flexible horizontal array construction. The p-n junction temperature of the arrays under QCW
operation is modeled with FEA software, as well as measured in this research. Updated reliability test results for these
kW arrays will be also reported. As the examples, we present the performance of the vertical arrays with > 57% Wall-Plug-Efficiency and the horizontal arrays with < 23 degree fast axis divergence (FWHM), both with 808nm wavelength.
The available wavelength for such arrays ranges from 780nm to beyond 1 um. Coherent also have the capability to
produce the array with wide and relatively uniform spectrum for athermal pumping of solid-state lasers, by integrating
diode lasers bars with different wavelength into single array.
We report on the application as well as microfabrication process of batch-fabricated optical near-field sensors using cantilevered scanning force microscopy tips. The process includes implementation of a coaxial conductive geometry into a silicon sensor tip, along with electrical connections on the cantilever and chip body. The coaxial guide structure is used as electric lead to a sub-micron Schottky photodetector at the end of the tip, formed at the junction of the protruding silicon core and a recessed aluminum coating. The I-V curves of these sensors are consistent with numerical studies for such constricted geometries. Optical near-field data gathered by this sensor in topography-following mode is presented.