Patent ID: 11888285
Assignee: TURNING POINT LASERS CORPORATION
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 0:
1. A low numerical aperture fiber output diode laser module, comprising:
a case;
multiple laser diodes arranged inside the case for emitting light beams directed across the case, wherein each laser diode of said multiple laser diodes includes a laser chip configured with a resonant cavity having an end face, wherein the end face of the resonant cavity forms a specular surface electroplated with a reflective film, and wherein reflectance of the reflective film is ≥20%;
an optical lens module arranged inside the case for collimating the light beams, and converging said light beams into a convergent light beam travelling substantially in perpendicular to the light beams along a space of the low numerical aperture fiber output diode laser module; and
an optic fiber fabricated from a material having high hydroxyl value ranging between 200 and 350 mg KOH/g, the optic fiber having a core optical fiber, wherein the output of the optic fiber is configured with a low numerical aperture, and wherein the optic fiber is positioned at the lateral side of the case substantially in perpendicular to said light beams, so the convergent light beam is coupled with the core optical fiber to the low numerical aperture.