Semiconductor laser module and production method for same

Abstract

A semiconductor laser module (1) provided with: a first substrate (10); a second substrate (20) arranged on the first substrate (10); a semiconductor laser element (30) that emits a laser beam (L) having an optical axis along the Z direction; a collimating lens (40) that collimates a component of a first axis direction (Y direction) from amongst the components of the laser beam (L); and a lens fixing block (50) that includes a lens attachment surface (50A) and a block fixing surface (50B) that are perpendicular to the X direction. An X direction end part (40A) of the collimating lens (40) is fixed to the lens attaching surface (50A) of the lens fixing block (50) by a lens fixing resin (42). The block fixing surface (50B) of the lens fixing block (50) is fixed to an X direction side-surface (20A) of the second substrate (20) by a block fixing resin (52).

Description

technical field [0001] The present invention relates to a semiconductor laser module and a manufacturing method thereof, and more particularly to a semiconductor laser module including a semiconductor laser element and a collimator lens for collimating laser light emitted from the semiconductor laser element and a manufacturing method thereof. Background technique [0002] Generally, the direction perpendicular to the pn junction of the semiconductor laser element is called the fast axis, and the direction parallel to the pn junction is called the slow axis, but the number of openings in the fast axis direction of the semiconductor laser element is larger than the number of openings in the slow axis direction much. Therefore, the laser light emitted from the semiconductor laser element has a large width in the fast axis direction. Therefore, it is necessary to arrange a collimator lens near the emission surface of the semiconductor laser element, and the collimator lens col...

AI Technical Summary

Problems solved by technology

However, since laser light cannot be emitted from the semiconductor laser element 1 at such a temperature, there is a problem that the collimator lens 6 cannot be aligned while emitting the laser light from the semiconductor laser element 1 (so-called active alignment).

[0007] In this case, if the semiconductor laser element 1 and the collimator lens 6 are fixed using resin or the like instead of the solder layers 5 and 8, active alignment can be performed. The positions of the object 4 and the collimator lens 6 also vary greatly with respect to the semiconductor laser element 1, so there is also a problem that the collimator lens 6 deviates from the centering position.

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