Horizontal cavity surface emitting laser integration features for heat assisted magnetic recording

Patent metadata

Field	Value
Publication number	US-10176833-B1
Application number	US-201715408637-A
Country	US
Kind code	B1
Filing date	Jan 18, 2017
Priority date	Jan 22, 2016
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

A folded lasing cavity comprises at least one bend. The folded lasing cavity is disposed on and configured to emit light along a substrate-parallel plane. An etched facet is on an emitting end of the folded lasing cavity and an etched mirror is on another end of the folding lasing cavity. An etched shaping mirror redirects light received from the etched facet in a direction normal to the substrate-parallel plane.

First claim

What is claimed is:

1. A laser comprising:
a folded lasing cavity comprising at least one bend, the folded lasing cavity disposed on and configured to emit light along a substrate-parallel plane;
an etched facet on an emitting end of the folded lasing cavity and an etched mirror on another end of the folded lasing cavity; and
an etched shaping mirror that redirects light received from the etched facet in a direction normal to the substrate-parallel plane, wherein the folded lasing cavity is uniformly cooled below the folded lasing cavity.

2. The laser of claim 1 , further comprising a grid of electrically conductive bumps on one side of the laser, a first portion of the bumps positioned over and coupled to the folded lasing cavity being configured as anode connections and a second portion of the bumps not positioned over the folded lasing cavity being configured as cathode connections.

3. The laser of claim 2 , wherein the electrically conductive bumps are configured to provide alignment of the laser with an optical input coupler of a slider.

4. The laser of claim 2 , wherein the etched shaping mirror is substantially centered with respect to the first portion of the bumps.

5. The laser of claim 2 , wherein the etched shaping mirror is offset with respect to the first portion of the bumps.

6. The laser of claim 1 , wherein the folded lasing cavity is formed by using etched reflective surfaces to direct the light.

7. The laser of claim 1 , wherein the folded lasing cavity comprises three or more bends such that at least two portions of the folding cavity laser are aligned and parallel with one another.

8. The laser of claim 1 , wherein at least one of the at least one bends is a right angle.

9. The laser of claim 1 , wherein at least one of the at least one bends comprises a curve.

Assignees

• Seagate Technology Llc

Inventors

• Hipwell Jr Roger L
• Olson Scott Eugene

Classifications

• G11B5/4866 Primary

  the arm comprising an optical waveguide, e.g. for thermally-assisted recording · CPC title

• G11B5/6088

  Optical waveguide in or on flying head · CPC title

• H01S5/1082

  with a special facet structure, e.g. structured, non planar, oblique · CPC title

• G11B5/4826

  Mounting, aligning or attachment of the transducer head relative to the arm assembly, e.g. slider holding members, gimbals, adhesive (G11B5/484 takes precedence; details of head housings or structures G11B5/10, G11B5/127; adjustment relative to the record carrier G11B5/56) · CPC title

• H01S5/02469

  Passive cooling, e.g. where heat is removed by the housing as a whole or by a heat pipe without any active cooling element like a TEC · CPC title