Patent ID: 11916355
Assignee: PRINCETON OPTRONICS, INC.
Field: Optics (Instruments)
Classification: CPC H  G | IPC H

Claim 16:
17. A narrow beam divergence semiconductor optical edge-emitting laser comprising:
a hybrid distributed Bragg reflector (hybrid DBR), the hybrid DBR having first
and second sides, the edge-emitting laser being disposed on the first side of the hybrid DBR;
the hybrid DBR including a high-contrast region and a low-contrast region,
wherein the high-contrast region includes a plurality of high refractive index difference pairs of a DBR materials of a second charge-carrier type, the high-contrast pairs being periodically disposed within the high-contrast region, and wherein the low-contrast region includes a plurality of pairs of a low refractive index difference DBR materials of the second charge-carrier type, the low-contrast pairs being periodically disposed within the low-contrast region; and
the hybrid DBR and the edge-emitting laser being operable to generate an emission having a spectral width of emission and a beam divergence; wherein the edge-emitting laser and the hybrid DBR have a narrow spectral bandwidth and are operable to substantially suppress one or more transverse and/or longitudinal modes such that the beam divergence and/or the spectral width of emission is substantially reduce.