Industrial Low noise tunable integrated semiconductor laser : Dynamic instability and route to single frequency operation

摘要

Laser technology is finding applications in areas such as high resolution spectroscopy, radar-lidar,velocimetry, or atomic clock where highly coherent tunable high power light sources are required. Offering suchperformances in the Near- and Middle-IR range, GaAs- and Sb-based Vertical External Cavity Surface EmittingLaser (VeCSEL) technologies [1] seem to be a well suited path to meet the required specifications of demandingapplications. Here, we report on the realization of industry ready packaged low noise single frequency VeCSELdevices emitting in the 0.8-1.1 μm and 2-2.5 μm spectral range with high performances thanks to a combinationof power-coherence-wavelength tunability and compactness. A fundamental study of the non-linear multimodelaser dynamics was carried out to avoid dynamic phase-amplitude instability. We demonstrate bothexperimentally and theoretically the existence of a deterministic dynamics of the laser field, with either a regularmultimode non-stationary regime, or a route to robust single frequency operation. Integration of flat photonicstechnology allows the realization of devices emitting new coherent light states (VORTEX or dual frequencylasers) for applications to optical tweezers or THz emission, for instance.