This is a monolithic array of about 350 VCSEL lasers. We're playing with drivers for it.
The issue is how to measure the light pulse. We have a NuFocus 40 GHz o/e converter with multimode fiber input. We ordered an Ebay micromanipulator and maybe we can just hover a fiber over one of the VCSELs and get enough light for the detector. The NF detector is un-amplified and not very sensitive, 0.2 a/w or something like that.
We also ordered a fiber-coupled GRIN lens which we could hover over the laser and maybe collect light from a bunch of the emitters.