InPhase Technologies is developing a holographic data storage drive with a target lifetime of at least 10 years. The laser
light source is a key component of the drive. Based on the limited lifetimes of early blue laser diodes, we made the laser a
modular and replaceable unit to minimize drive downtime and insure that the overall HDS drive meets the long lifetime goal.
Previously, we reported on one part of the laser module, the blue external cavity diode laser (ECLD) that we co-developed
with Nichia Corporation . In this paper we report on the rest of the laser module, which prepares coherent, wavelength
tunable light from the ECLD for insertion into an HDS drive.