Assembly with tapered, threaded ferrule housing for improved alignment of fiber with laser

An assembly for improved alignment of a laser for generating laser light with an optical fiber having an end section terminating in a light-receiving end, the assembly comprising:

• (a) a laser housing comprising a base and substantially cylindrical housing walls mounted at a bottom portion to the base, wherein the base is for receiving the laser and the housing walls have a substantially cylindrical internal surface having internal threads at a top portion thereof, the internal threads having a minor diameter and a major diameter;
• and
• (b) an annular ferrule housing having a substantially cylindrical through-hole having an inner diameter (ID) sufficient to receive a fiber ferrule having the end section of the fiber disposed therein, the ferrule housing further having an axially tapered external surface having external threads that are threadably compatible with the internal threads, wherein the major diameter of the external threads decreases monotonically from a first major diameter at a top portion of the external surface to a comparatively smaller second major diameter at a bottom portion of the external surface, wherein the first major diameter of the external threads is larger, and the second major diameter of the external threads is smaller, than the minor diameter of the internal threads;
• wherein the ID of the ferrule housing is approximately 2.55 mm, the outer diameter (OD) of the fiber ferrule is approximately 2.50 mm, the ID of the fiber ferrule and the OD of the fiber are each approximately 0.125 mm, the first major diameter of the external threads is approximately 5.076 mm, the second major diameter of the external threads is approximately 4.476 mm, the OD of the housing walls is approximately 6.25 mm, the ID of the housing walls is approximately 4.8 mm, the major diameter of the internal threads is approximately 4.8 mm, and the minor diameter of the internal threads is approximately 4.2 mm.